Talk:Tendon reflex

From Wikipedia, the free encyclopedia

"Tendon reflex (or T-reflex) is an involuntary muscle contraction after one of its tendons is hit.

The sensory receptors responsible for the reflex are actually located not in the tendon but rather in the muscle itself. These are muscle spindles which are sensitive to muscle stretch. Afferent discharges from muscle spindles enter the spinal cord through the sensory nerve root and monosynaptically excite motoneurons, which in turn activate the muscle. The knee-jerk reflex and the Achilles reflex are examples of tendon reflex."

this is false. The sensory receptor that detects change in tension is the golgi tendon which lie within tendon. It causes the muscle to relax in stead of contract in order to DECREASE tension in the tendons, a negative feedback arc. Another motor neuron to it's antagonistic muscle is stimulated, causing it to contract. The muscle spindles are responsible for STRETCH REFLEX and not tendon reflex.