2.how does the movement of the diaphragm cause the air to go in and out of the lungs?
a. The movement of the diaphragm affects the air pressure inside the chest cavity by either Decreasing or increasing the space, thus allowing air to go in out of the lungs.
b. The movement of the diaphragm affects the air pressure inside the chest cavity by either decreasing the space, thus allowing the air to go In and out of the lungs.
c. The movement of the diaphragm affects the air pressure inside the chest cavity by either increasing
thus allowing air to go in and out of the lungs.
d.none of these.
a. The movement of the diaphragm affects the air pressure inside the chest cavity by either Decreasing or increasing the space, thus allowing air to go in out of the lungs.
b. The movement of the diaphragm affects the air pressure inside the chest cavity by either decreasing the space, thus allowing the air to go In and out of the lungs.
c. The movement of the diaphragm affects the air pressure inside the chest cavity by either increasing
thus allowing air to go in and out of the lungs.
d.none of these.
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Answer:
D. None of these
Explanation:
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.