Understanding the Respiratory System and the Process of Respiration
The respiratory system is vital for breathing as it helps in the exchange of oxygen and carbon dioxide. This system consists of organs such as the lungs, bronchi, and alveoli. The process of respiration involves inhaling air through the nose or mouth, passing it through the trachea and bronchi into the lungs where oxygen is transferred to the blood and carbon dioxide is removed. The diaphragm plays a key role in breathing by expanding and contracting to facilitate lung function.
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Presentation Transcript
Respiratory System Science 2018-2019
Respiratory System The Respiratory System is related to respiration. It s made up of organs that help us breathe. We breathe IN oxygen from the air. We breathe OUT carbon dioxide.
PROCESS OF RESPIRATION We breathe through the nose/mouth. The pharynx opens and the air goes down a tube called the trachea. The air travels down two tubes called bronchi and enters the lungs. In lungs there are bronchioles and alveolies. The oxygen from the air passes into the blood. Gases exchange and carbon dioxide leaves the body.
Respiratory system Lungs
DIAPHRAGM When we breathe a muscle called diaphragm contracts and relaxes. When we breathe in, diaphragm contracts and lungs get bigger. When we breathe out, diaphragm relaxes and lungs get smaller.
