試題詳解

20.What is the main function of La axon for muscle contraction? 
(A) Innervates extrafusal muscle fibers, causing muscle contraction in response o signals from the spinal cord.
(B) Innervates intrafusal muscle fibers within muscle spindles, regulating their sensitivity to stretch and maintaining the spindles function during muscle contraction.
(C) Conveys proprioceptive information from muscle spindles to the spinal cord, providing feedback on muscle length and rate of change.
(D) Carries Golgi tendon organ information, signaling changes in muscle tension to prevent excessive force generation.

(E) None ofthe above.