Which of the following would result in increased active muscle tension if the task required the muscle to produce greater torque/tension?
A) Increased firing rate of the activated motor units
B) Decreased number of motor units activated
C) Increased amount of perimysium and endomysium
D) Decreased number of cross-bridges formed

Question

Quizplus · Accepted Answer

Increased firing rate of motor units would result in increased active muscle tension because it would cause more muscle fibers to contract.

Answer: D
 Decreased number of cross-bridges formed would result in decreased active muscle tension because fewer cross-bridges mean fewer muscle fibers are contracting. B and C are incorrect because they would not lead to increased active muscle tension. Decreasing the number of motor units activated would decrease tension, and increasing the amount of perimysium and endomysium would provide structural support but not directly increase tension.

Which of the Following Would Result in Increased Active Muscle