Quiamjotdianajoyviz
Answered

which structure moves down as its muscle contracts

a diaphragm
b ribs
c phwrynx
d trachea

answer pls ingive 5 star and heart
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Sagot :

Frgeniusviz

Answer:

A.

Explanation:

nasa book po namen yan.

Hencehenceviz

A. Diaphragm. When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it.