Professor Williams is giving a lecture about the motor systems in the body. He tells the class that we need muscle spindles to
A) provide feedback regarding muscle contraction.
B) provide feedback regarding position of joints.
C) provide feedback regarding muscle length.
D) contract muscles.

Question

Quizplus · Accepted Answer

Muscle spindles are sensory receptors located within the muscle that provide feedback to the brain regarding the length of the muscle. This information is used to adjust the level of muscle contraction needed for voluntary movement and to regulate muscle tone to maintain posture. Muscle spindles do not contract muscles or provide information about joint position, making options A, B, and D incorrect.

Professor Williams Is Giving a Lecture About the Motor Systems