The Breathing System in Humans

Explore the intricacies of the human breathing system, including the role of carbon dioxide in gaseous exchange. Test your knowledge with interactive quizzes and learn about the functions of different respiratory components such as the larynx and trachea. Dive into topics like breathing rates, gas exchange, and the control of energy release from food within cells.

• Human Respiratory System
• Breathing Rate
• Gaseous Exchange
• Carbon Dioxide Control
• Larynx Function

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1. 3.4.4 The Breathing System in the Human 3.4.7.H Carbon Dioxide: A Controlling Factor in Gaseous Exchange Follow-Me iQuiz

2. Q. What is the average breathing rate at rest? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

3. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

4. Q. What is the function of the larynx? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

5. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

6. Q. Name the blood vessel that returns blood rich in oxygen to the heart. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

7. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

8. Q. State a possible effect of smoking on the breathing resting rate. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

9. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

10. Q. Where is the epiglottis? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

11. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

12. Q. Name the muscles that are used in breathing. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

13. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

14. Q. True or False. Humans receive oxygen from the air they inhale. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

15. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

16. Q. What is the role of alveoli in the lungs? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

17. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

18. Q. State the location in the human body of the intercostal muscles. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

19. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

20. Q. Give one way in which water is lost from the body. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

21. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

22. Q. Give one feature of the alveoli that allows efficient exchange of gases. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

23. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

24. Q. What is the function of cilia in the breathing system? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

25. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

26. Q. Name the main gas transported in the pulmonary artery. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

27. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

28. Q. Name the process involved in the passage of gas between the alveolus and the blood. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

29. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

30. Q. What is the function of the epiglottis? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

31. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

32. Q. How did you measure the breathing resting rate? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

33. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

34. Q. True or False. Humans receive nitrogen from the air they inhale for protein manufacture. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

35. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

36. Q. The trachea contains rings of cartilage. Suggest a function of this cartilage. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

37. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

38. Q. When the diaphragm and intercostal muscles contract the volume of the thorax and the pressure 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

39. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

40. Q. Breathing rate in humans is controlled by the concentration of what gas dissolved in the blood? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

41. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

42. Q. Outline the steps involved in inhalation. 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

43. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

44. Q. What is respiration? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

45. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

46. Q. When the diaphragm and intercostal muscles relax the volume of the thorax and the pressure 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

47. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

48. Q. Where do cilia occur in the breathing system? 16 bpm 72 bpm Exchange gases Produce sound 16 bpm 72 bpm Exchange gases Produce sound At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery At the back of the throat; Top of oesophagus FALSE TRUE Pulmonary artery Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Impulse from brain; Muscles contract; Thorax volume increases; Pressure decreases Between ribs Pulmonary vein Between ribs Pulmonary vein Carbon dioxide Air inhaled Raises rate Carbon dioxide Air inhaled Raises rate Controlled release of energy from food, within the cells of an organism Controlled release of energy from food, within the cells of an organism Sweating; Breathing out water vapour; Urination Increases; Decreases Sweating; Breathing out Increases; Decreases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable water vapour; Urination Keep trachea open; Protection of trachea Decreases; Increases Thin walls; Moist surfaces; Surrounded by capillaries; Large surface area; Expandable Keep trachea open; Protection of trachea Decreases; Increases Diaphragm; Intercostal Trachea Observe; Count; Repeat; Average; Record Observe; Count; Repeat; Average; Record Diaphragm; Intercostal Trachea Trap dirt and bacteria and sweep them upwards to the glottis Diffusion Prevent food going down 'the wrong way' Trap dirt and bacteria and sweep them upwards to the glottis Prevent food going down 'the wrong way' Diffusion

49. CONGRATULATIONS You re Brilliant

50. Incorrect Please CLICK on THIS BOX to Try Again Please CLICK on THIS BOX to Try Again