What happens when air is exhaled from the lungs?
a. The rib muscles contract and move outward.
b. The chest cavity expands and grows larger,
c. The diaphragm relaxes and moves upward.
d. The lungs contract and then expand.
a. The rib muscles contract and move outward.
b. The chest cavity expands and grows larger,
c. The diaphragm relaxes and moves upward.
d. The lungs contract and then expand.
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Answer:
c
Explanation:
the diaphram relaxes and moves upward
C, When you breathe out, or exhale, your diaphragm and rib muscles relax,reducing the space in the chest cavity. As the chest cavity gets smaller, your lungs deflate, similar to the releasing of air from a balloon