What is the vestibulo spinal reflex?
The vestibulospinal (VS) reflexes are changes in the activity of body muscles induced by movements of the head in space that stimulate labyrinthine receptors and aimed at stabilizing posture.
What are Intersegmental reflexes?
a reflex arc formed by fibers of sensory neurons or interneurons that travel from one spinal segment to another to communicate with motor neurons.
Are visceral reflexes Polysynaptic?
In polysynaptic reflex arcs, one or more interneurons in the gray matter constitute the integration center. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.
What is meant by Monosynaptic reflex?
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. This contraction allows the muscle to resist the force that initially caused the reflex.
What purposes do the Vestibulocervical and vestibulospinal reflexes serve?
The purpose of the vestibulospinal reflex (VSR) is to stabilize the body. The VSR is an assemblage of several reflexes named according to the timing (dynamic vs. static or tonic) and sensory input (canal, otolith or both).
What is the function of the vestibulospinal pathway?
The vestibulospinal tract is comprised of a lateral and medial pathway. The function of these tracts is to maintain equilibratory reflexes from the input of the vestibular apparatus. They will reach the axial muscles, i.e. intercostal and back muscles, as well as the extensors of the limbs.
What is a good example of a spinal reflex?
For example, the withdrawal reflex (nociceptive or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli. It causes the stimulation of sensory, association, and motor neurons. Spinal reflexes include the stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex.
What is the definition of spinal reflex?
A spinal reflex is a reflexive action mediated by cells in the spinal cord, bypassing the brain altogether.
What is a simple spinal reflex?
The simplest reflex arc is the monosynaptic (stretch) reflex . The afferent fibres from the muscle spindles in a muscle enter the dorsal root and proceed to the ventral horn of the spinal cord. There they synapse on motoneurones that project back to the same muscle, or muscles in the same functional group.
What are the 5 steps to a reflex arc?
Answer Wiki. A simple reflex arc has five steps: A stimulus: An outside force that does something. Afferent , or sensory neurons, carry the impulse to the spinal cord. Interneurons in the spinal cord integrate and plan a response. Efferent, or motor neurons, carry out the response. The effector response is the action carried out.