Action potentials in muscle fibers
A) do not occur.
B) spread out in two directions on either side of a receptor site.
C) travel in only one direction, from one end of a muscle fiber to the other.
D) lead to multiple twitches in that fiber.

Question

Quizplus · Accepted Answer

Action potentials in muscle fibers spread out in two directions from the point of initiation, typically at or near the middle of the fiber, ensuring that the contraction signal is propagated throughout the entire muscle fiber efficiently.

Action Potentials in Muscle Fibers