Breathing is accomplished via the rhythmic contraction and relaxation of
A) smooth muscle.
B) skeletal muscle.
C) cardiac muscle.
D) smooth muscle and cardiac muscle.
E) smooth muscle and skeletal muscle.
Answer: B
Breathing is accomplished via the rhythmic contraction and relaxation of
A) smooth muscle.
B) skeletal muscle.
C) cardiac muscle.
D) smooth muscle and cardiac muscle.
E) smooth muscle and skeletal muscle.
Answer: B
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