Multiple Choice
What is responsible for initiating contraction of smooth muscle?
A) stimulation by motor neurons
B) inhibition of acetylcholinesterase
C) membrane potential drifting to threshold as a result of automatic changes in ion movement across the membrane
D) excitation of the gap junctions by transmitter substance
E) stimulation by the autonomic nervous system
Correct Answer:
Verified
Correct Answer:
Verified
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