Question

describe the changes that take place 1) around the rib cage 2)diaphragm 3)chest cavity during inspiration . state the effect of these changes.​

Answer 1

Answer:

1. Around the rib cage: the rib cage moves outward and upwards.
2. diaphragm: the diaphragm moves downward and gets flattened
3. chest cavity: the chest cavity enlarges in volume

Explanation:

EFFECT: all these changes enlarges the space inside the body so that lungs can increase their volume and expand to inhale more air

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Answer 2

Explanation:

1) Around the rib cage :- during inspiration the inter coastal muscles contract.

2) the diaphragm contract ( moves down ) and lungs move down as well as out ward.

3) chest cavity:- the chest cavity changes in volume.