In the human respiratory system, the contraction and relaxation of a muscle called the diaphragm helps move air through which of
the following structures?
A.
artery, capillary, and vein
B.
larynx, pharynx, and trachea
C.
atrium, trachea, and ventricle
D.
esophagus, kidney, and pharynx
1 answer:
Answer:
I think my answer is
C.
atrium, trachea, and ventricle
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