What is the inverse myotatic reflex?

What is the inverse myotatic reflex?

The Inverse Myotatic Reflex Involves Sensors of Muscle Force in the Tendon. Stretch receptors called Golgi tendon organs are found within the collagen fibers of tendons and within joint capsules. They are generally located in series with the muscle rather than the parallel arrangement of the intrafusal muscle fibers.

What is the stretch reflex reaction?

Introduction. 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.

What is the correct order of events of a simple stretch reflex?

Terms in this set (7)

  • A tap on the patellar ligament excites the nerve endings of muscle spindles in the quadriceps femoris.
  • Stretch signals travel to the spinal cord via a primary afferent neuron.
  • A primary afferent nerve fiber stimulates an alpha motor neuron in the spinal cord.

How does the myotatic reflex work?

The myotatic reflex is the “knee-jerk” reflex in which a muscle contracts in direct response to its stretch. It is typically elicited by tapping on the tendon of a muscle, which deforms the tendon and stretches the muscle.

What triggers the inverse stretch reflex?

Quick Reference. A reflex action mediated by the Golgi tendon organs that, when the organs are stimulated by a prolonged stretch, cause the stretched muscle to relax.

What is a reflex arc in the nervous system?

The reflex arc is a special type of neural circuit that begins with a sensory neuron at a receptor (e.g., a pain receptor in the fingertip) and ends with a motor neuron at an effector (e.g., a skeletal muscle).

Is the stretch reflex ipsilateral or contralateral?

ipsilateral reflexes
The stretch and Golgi tendon reflexes work in tandem to control muscle length and tension. Both are examples of ipsilateral reflexes, meaning the reflex occurs on the same side of the body as the stimulus.

What is the correct order of events in a reflex arc?

Stimulus, sensory neuron, intermediary neuron, motor neuron and defector organ is the correct order of general reflex arc.

Which of the following is the sequence of the transmission of signals of a reflex arc?

So, the correct answer is ‘Receptors – Sensory neuron – Spinal cord – Motor neuron – Muscle’

What happens during the patellar reflex?

The patellar reflex occurs when an abrupt change arises in muscle length; in this case, it is produced by the tendon stretching, which is caused when the hammer stroke is applied [3, 4]. The normal response must be a sudden leg extension.

What is a spinal reflex arc?

A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.