Physiology When a stretch reflex occurs the muscles that antagonize the action of the muscle involved relaxes. This phenomenon is known as: A Inverse stretch reflex B Reciprocal innervation C Autogenic inhibition D Lenthening reaction 💡 Explanation When a stretch reflex occurs the muscles that antagonize the action of the muscle involved relaxes. This phenomenon is known as: ✓ Correct Answer: B. Reciprocal innervation