Which feature represents one similarity between fast- and slow-twitch muscle fibers within a muscle?
A) Number of mitochondria
B) Amount of myoglobin
C) Amount of glycogen and fat
D) Number of neuromuscular junctions
E) Level of ATPase activity

Question

Quizplus · Accepted Answer

Both fast- and slow-twitch muscle fibers have a single neuromuscular junction, which is the point where a motor neuron connects to a muscle fiber. This is a fundamental characteristic of muscle fibers that does not vary with fiber type.

Which Feature Represents One Similarity Between Fast- and Slow-Twitch Muscle