A major difference between slow- and fast-twitch fibers is that
A) one neuron may innervate thousands of slow-twitch fibers.
B) one neuron may innervate as few as 10 fast-twitch fibers.
C) slow-twitch fibers are important for sustained contraction.
D) all of the above.

Question

Quizplus · Accepted Answer

Slow-twitch fibers are important for sustained contraction, and one neuron may innervate thousands of slow-twitch fibers. Fast-twitch fibers are important for rapid, powerful contractions, and one neuron may innervate as few as 10 fast-twitch fibers.

A Major Difference Between Slow- and Fast-Twitch Fibers Is That