Smooth Muscle Differs from Both Cardiac and Skeletal Muscle in That

Multiple Choice

Smooth muscle differs from both cardiac and skeletal muscle in that

A) it can act as a pacemaker for rhythmic contractions.
B) contractions of smooth muscle are not due to Ca²⁺ influx into the sarcoplasm.
C) neighboring cells in smooth muscle are electrically coupled by gap junctions.
D) neighboring cells in smooth muscle are tightly connected by intercalated discs.
E) its actin and myosin show no repeating pattern of arrangement when viewed under a microscope.