Which statement describes a neuroregulin?
A)Chemical mediator that initiates signals from the anterior horn cell of the spinal card to the axon of motor nerve branches of groups of muscle fibers
B)Neurotransmitter that provides a means of reporting changes in length, tension, velocity, and tone in muscles
C)Proteoglycan secreted by neurons, which increases acetylcholine receptors
D)Mechanoreceptor that lies parallel to muscle fibers and responds to muscle stretching

Question

Quizplus · Accepted Answer

Motor and sensory neurons secrete a proteoglycan called neuroregulin that increases acetylcholine receptors and helps in the formation of muscle spindle fibers. From the anterior horn cell of the spinal cord, the axons of motor nerves branch out to innervate a specific group of muscle fibers. Muscle spindles, Golgi tendon organs, and free nerve endings provide a means of reporting changes in length, tension, velocity, and tone in the muscle. Spindles are mechanoreceptors that lie parallel to muscle fibers and respond to muscle stretching.

Which Statement Describes a Neuroregulin