For many reflexes, including the stretch reflex, the excitation of a muscle leads to
A) excitation of all motorneurons that are contralateral.
B) inhibition of motor neurons of its antagonist.
C) inhibition of motor neurons of its synergist.
D) excitation of motor neurons of the antagonist.
E) inhibition of sensory neurons that initiate the reflex.

Question

Quizplus · Accepted Answer

The stretch reflex involves the excitation of a muscle and the simultaneous inhibition of the motor neurons of its antagonist muscle, a process known as reciprocal inhibition.

For Many Reflexes, Including the Stretch Reflex, the Excitation of a Muscle