GENERAL HISTOLOGY

Detailed explanation-1: -The Myotatic Reflex Is a MonoSynaptic Reflex Between Ia Afferents and the Motor Neuron. The myotatic reflex is the “knee-jerk” reflex in which a muscle contracts in direct response to its stretch.

Detailed explanation-2: -Monosynaptic reflexes include, for example, the biceps and triceps reflexes, and patellar stretch reflex or knee jerk (see figure below). In contrast, polysynaptic reflexes are mediated through at least two synapses and one interneuron.

Detailed explanation-3: -The monosynaptic stretch reflex, or sometimes also referred to as the muscle stretch reflex, deep tendon reflex, is a reflex arc that provides direct communication between sensory and motor neurons innervating the muscle.

Detailed explanation-4: -The stretch reflex or myotatic reflex refers to the contraction of a muscle in response to its passive stretching. When a muscle is stretched, the stretch reflex regulates the length of the muscle automatically by increasing its contractility as long as the stretch is within the physiological limits.

Detailed explanation-5: -The knee-jerk reflex is a great example of the stretch reflex. When the doctor taps your patellar tendon just below your knee, it stretches your patellar tendon, your quadriceps tendon, and your quadriceps muscles.