Which of the following muscles would contract most quickly against the same load?
A) a muscle receiving 10 action potentials per second
B) a muscle receiving 20 action potentials per second
C) neither, muscles always contract at the same rate

Question

Quizplus · Accepted Answer

The frequency of action potentials determines the rate of muscle contraction. The more frequently action potentials are received, the quicker and more forceful the contraction will be. Therefore, the muscle receiving 20 action potentials per second would contract most quickly against the same load.

Which of the Following Muscles Would Contract Most Quickly Against