A Single Contraction-Relaxation Cycle in a Muscle Fiber Produces A(n)

Question

A single contraction-relaxation cycle in a muscle fiber produces a(n)
A) cramp.
B) twitch.
C) tetanic contraction.
D) action potential.
E) motor unit.

Accepted Answer

A single contraction-relaxation cycle in a muscle fiber is known as a twitch. This is a brief and rapid contraction and relaxation of the muscle fiber that is stimulated by a single action potential.