Which are true of the diaphragm? Choose all that apply.
A. It is made of skeletal muscle.
B. It is made of smooth muscle.
C. Contraction of it increases the size of the lungs.
D. Relaxation of it increases the size of the lungs.
Ans:
A. It is made of skeletal muscle.
B. It is made of smooth muscle.
C. Contraction of it increases the size of the lungs.
D. Relaxation of it increases the size of the lungs.
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