What happens in a crossed extensor reflex?

The crossed extensor reflex is a contralateral reflex that allows the body to compensate on one side for a stimulus on the other. For example, when one foot steps on a nail, the crossed extensor reflex shifts the body’s weight onto the other foot, protecting and withdrawing the foot on the nail.

What is an example of crossed extensor reflex?

What is a crossed extensor reflex quizlet?

Crossed extensor reflex. Causes extensor muscles on the side opposite (contralateral) side of the painful stimulus to contract. This causes the opposite leg to straighten to support shifting weight when one foot Is withdrawn from a painful stimulus. You just studied 3 terms!

Is crossed extensor reflex normal?

The crossed extensor reflex generally is considered an abnormal reflex except in the standing position. In the normal recumbent animal, the extension response is inhibited through descending pathways. Crossed extensor reflexes result from lesions in ipsilateral descending pathways, a sign of UMN disease.

What is the definition of the crossed extensor reflex?

crossed extensor reflex. a reflex movement which occurs in response to a test of a flexor reflex, extension is elicited in the opposite limb. Seen in upper motor neuron disease.

When is crossed ex · Ten · Sion extension of the contralateral hind limb?

crossed ex·ten·sion re·flex extension of the contralateral hind limb when the paw of an animal is painfully stimulated or the central cut end of an afferent nerve, for example, the peroneal, is stimulated; sometimes occurs in humans on tapping the skin.

What is the definition of an extensor muscle?

A muscle the contraction of which causes movement at a joint with the consequence that the limb or body assumes a straighter line, or so that the distance between the parts proximal and distal to the joint is increased or extended; the antagonist of a flexor. a muscle that extends or straightens a limb. Want to thank TFD for its existence?

What does crossed ex-Ten-Sion RE-flex mean?

crossed ex·ten·sion re·flex. extension of the contralateral hind limb when the paw of an animal is painfully stimulated or the central cut end of an afferent nerve, for example, the peroneal, is stimulated; sometimes occurs in humans on tapping the skin.

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