Which of the following is a true statement about a muscle's response to stretch?
A)The muscle spindle is the motor receptor that protects the sarcomeres when a stretch is applied.
B)"Sarcomere give" is best described as a plastic change in muscle that occurs as the result of stretch force that is applied quickly.
C)A quick stretch of a muscle is believed to facilitate contraction of muscle fibers by means of the Golgi tendon organ (GTO).
D)The primary source of a muscle's resistance to passive stretch is the connective tissue in and around muscle.

Question

Quizplus · Accepted Answer

The connective tissue, such as the fascia and tendons, provide the main resistance to passive stretch of a muscle. The muscle spindle is a sensory receptor that detects changes in muscle length, but it does not protect the sarcomeres from stretch. Sarcomere give is a phenomenon that occurs over a longer period of slow, sustained stretch, not a quick stretch. The Golgi tendon organ is involved in inhibiting muscle contraction in response to tension, not facilitating it.

Which of the Following Is a True Statement About a Muscle's