Is the flexor reflex Polysynaptic?

Is the flexor reflex Polysynaptic?

The flexor reflex is a polysynaptic reflex that results in flexor muscle contraction. It is elicited by afferent stimuli collectively known as flexor reflex afferents (FRAs).

What’s an example of a Polysynaptic reflex?

An example of a polysynaptic reflex arc is seen when a person steps on a tack—in response, their body must pull that foot up while simultaneously transferring balance to the other leg.

Why is the withdrawal reflex Polysynaptic?

The withdrawal reflex (nociceptive flexion reflex or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli. A withdrawal reflex is mediated by a polysynaptic reflex resulting in the stimulation of many motor neurons in order to give a quick response. …

Is withdrawal reflex Monosynaptic or Polysynaptic?

Spinal reflexes are often monosynaptic and are mediated by a simple reflex arc. A withdrawal reflex is mediated by a polysynaptic reflex resulting in the stimulation of many motor neurons in order to give a quick response.

Is the withdrawal reflex Polysynaptic?

This automatic response is known as the withdrawal reflex defined as the automatic withdrawal of a limb from a painful stimulus. This response is a polysynaptic reflex, which means that interneurons are involved in mediating the reflex between the afferent (sensory) and efferent (motor) signals.

Is the withdrawal reflex Monosynaptic or Polysynaptic?

What happens in the withdrawal reflex?

Withdrawal Reflex When a person touches a hot object and withdraws his hand from it without thinking about it, the heat stimulates temperature and danger receptors in the skin, triggering a sensory impulse that travels to the central nervous system.

How does the flexor withdrawal reflex work?

The withdrawal reflex (nociceptive flexion reflex or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli. A withdrawal reflex is mediated by a polysynaptic reflex resulting in the stimulation of many motor neurons in order to give a quick response.

What is Polysynaptic spinal reflex?

polysynaptic reflex A reflex action that involves an electrical impulse being transferred from a sensory neuron to a motor neuron via at least one connecting neuron (interneuron) in the spinal cord.

What is the function of the flexor withdrawal reflex?

Polysynaptic Reflexes: the Flexion Withdrawal Reflex. The flexor withdrawal reflex has a complex polysynaptic pathway that causes withdrawal of a limb from a noxious stimulus and maintain the withdrawn position.

What is withdrawal reflex in spinal cord injury?

Flexor/withdrawal reflex. The flexor reflex is a polysynaptic spinal reflex that might be connected with spinal locomotor centers (Bussel et al., 1988). The dominant view is that flexor reflexes are exaggerated after a central nervous lesion and cause muscle spasms after severe spinal cord injury (Ditunno et al., 2004).

What is a crossed polysynaptic reflex?

Polysynaptic Reflexes: the Crossed Extensor Reflex. The pathways that accomplish this are polysynaptic and cross the midline of the spinal cord. When nociceptors in the opposite limb elicit a flexor reflex, the crossed polysynaptic pathway excites extensor motoneurones on the opposite side of the cord.

What is the withdrawal response of a reflex arc?

Also, it is also an intersegmental reflex arc, meaning that the outcomes of the reflex get mediated by the stimulation or inhibition of motor neurons from multiple levels of the same spinal cord. In evolution, this withdrawal response is critical in avoiding the significant dangers.