Which of the following is involved in the gradation of muscle contraction?

Question

Quizplus · Accepted Answer

Gradation of muscle contraction involves the activation of varying numbers of motor units and variation in the frequency of action potentials initiated in each muscle fiber. Therefore, both options (a) and (b) are correct. Option (c) is incorrect as the size of an action potential is constant for a given muscle fiber. Therefore, the correct answer is (D) both (a) and (b) above.

Which of the Following Is Involved in the Gradation of Muscle