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Question
The respiratory system (involving inhalation and exhalation processes) is responsible for taking in oxygen rich air and expelling carbon dioxide rich air. Which of the following is the sequence in which events occur in the inhalation process?
P : Air pressure inside your lungs drops.
Q : The diaphragm contracts.
R : Air from outside rushes into your lungs.
The respiratory system (involving inhalation and exhalation processes) is responsible for taking in oxygen rich air and expelling carbon dioxide rich air. Which of the following is the sequence in which events occur in the inhalation process?
P : Air pressure inside your lungs drops.
Q : The diaphragm contracts.
R : Air from outside rushes into your lungs.
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Solution
The correct option is B Q, P, R
In the breathing process, the carbon dioxide from our body is expelled out and air containing more oxygen is pumped into our lungs. The breathing mechanism involves two processes, viz., inspiration and expiration. In the process of inspiration the diaphragm contracts, the chest cavity enlarges, and the air pressure inside our lungs drops. To equalize pressure air from outside rushes into our lungs.
In the breathing process, the carbon dioxide from our body is expelled out and air containing more oxygen is pumped into our lungs. The breathing mechanism involves two processes, viz., inspiration and expiration. In the process of inspiration the diaphragm contracts, the chest cavity enlarges, and the air pressure inside our lungs drops. To equalize pressure air from outside rushes into our lungs.
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