explain the mechanism of breathing in humans.
Answers
Mechanism of breathing in humans:
a. Breathing is a process in which exchange of gases take place.
b. Oxygen in air enters lungs through nose because of pressure difference cause by diaphargm.
c. Oxygen is exchanged with carbon dioxide in alveoli of lungs.
d. Finally the carbon dioxide is given out through nose.
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Answer:
Mechanism Of Breathing
The air which we breathe in and out of the lungs varies in its pressure. So basically when there is a fall in air pressure the alveolar spaces falls and the air enters the lungs (inspiration) and as the pressure of the alveoli within exceeds the atmospheric pressure the air is blown from the lungs (expiration). The flow rate of air is in proportion to the magnitude of the pressure difference.
The breathing mechanism involves two processes:
Inspiration
Expiration
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