Question

The function of diaphragm during breathing process is a) to block the food

b) to decrease the carbon dioxide level

c) to increase the surface area of lungs

d) to reduce the friction​

Answer 1

Answer:

Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

Answer 2

Answer:

the question was incomplete

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