Question

during inhalation a) diaphragm and rib muscles contract b) diaphragm contracts and rib muscles relax c) both diaphragm and rib muscles relax d) both diaphragm and rib muscles contract chose the correct option​

Answer 1

answer:

c

explanation:

During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.

Answer 2

Answer:

c) both diaphragm and rib muscles relax

Explanation:

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