Which Feature Distinguishes a Smooth Muscle Cell from a Skeletal

question 95

Multiple Choice

Which feature distinguishes a smooth muscle cell from a skeletal muscle cell?

• A) Smooth muscle cells are larger than skeletal muscle cells.
• B) Most smooth muscle cells are branched, whereas skeletal muscle cells are unbranched.
• C) There is a more regular array of actin and myosin filaments in smooth muscle than there is in skeletal muscle.
• D) In smooth muscle, action potentials can spread from one cell to the next through gap junctions, whereas gap junctions do not occur between skeletal muscle cells.
• E) Smooth muscle is primarily under voluntary control through the autonomic nervous system, whereas skeletal muscle is under involuntary control.

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