All skeletal muscle fibers
A) are both smooth and under involuntary control.
B) are both smooth and operate independently of other skeletal muscle fibers.
C) are both striated and under voluntary control.
D) are both smooth and under voluntary control.
E) are both striated and electrically coupled to neighboring fibers.

Question

Quizplus · Accepted Answer

Skeletal muscle fibers are striated and under voluntary control. Smooth muscle fibers are non-striated and under involuntary control, while cardiac muscle fibers are striated but under involuntary control. Therefore, option A, B, D, and E are incorrect.

All Skeletal Muscle Fibers