Explain the Mechanism of Human Respiratory System through an Activity Class 7
Answers
Answer:
The pressure of the air we breathe in and out of our lungs changes. So, when the air pressure drops, the alveolar gaps expand and air enters the lungs (inhalation), and when the pressure of the alveoli within the lungs exceeds the atmospheric pressure, the air is blown out of the lungs (exhalation) (expiration). The amount of the pressure difference determines the air flow rate.
Explanation:
The breathing mechanism and gas exchange are both part of the respiratory mechanism. The gaseous exchange takes place in the alveoli through diffusion. The pressure differential between blood and tissues, or atmospheric air and blood, determine this. At the surface of the alveolus, gas exchange takes place. This is how the human respiratory system functions.