during exhalation
1) diaphragm moves downward and ribs move upward and outward.
2) diaphragm moves downward and ribs move downward and inward.
3) diaphragm moves upward and ribs move upward and outward.
4) diaphragm moves upward and ribs move downward and inward.
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Answered by
8
Answer:
dear 4 is correct. diaphragm moves upward and ribs moves downward and inward
Explanation:
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2
Answer:
option 3 is correct because upon inhalation the diaphragm contracts and flattens and the chest cavity enlarges . upon exhalation the diaphragm relaxes and back to its normal domelike shape and air is forced out of the lungs.
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