If a skeletal muscle is lengthened significantly beyond its resting length:

Question

Quizplus · Accepted Answer

When a skeletal muscle is lengthened significantly beyond its resting length, it enters a state of passive tension in which the muscle cannot produce the same force as it would at its normal resting length. This is due to the fact that the actin and myosin filaments are no longer optimally arranged, reducing the number of cross-bridges that can form during contraction, resulting in decreased muscle tension. Choosing A or B would be incorrect as muscle tension is reduced, and the muscle can still shorten during contraction. Choosing D or E would also be incorrect as a change does occur, and only smooth muscle isn't subject to the same restrictions as skeletal muscle.

If a Skeletal Muscle Is Lengthened Significantly Beyond Its Resting