myotactic reflex - traduction vers russe
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myotactic reflex - traduction vers russe

MUSCLE CONTRACTION IN RESPONSE TO STRETCHING WITHIN THE MUSCLE
Deep tendon reflex; Myotatic reflex; Spinal reflex; Stretch Reflex; Reflex, stretch; Myotactic reflex; Deep tendon reflexes; Stretch reflexes
  • The [[patellar reflex]] is an example of the stretch reflex.

myotactic reflex         

медицина

рефлекс растяжения мышцы

spinal reflex         

общая лексика

спинномозговой рефлекс

медицина

спинальный рефлекс

myotatic reflex         

общая лексика

рефлекс растяжения мышцы

Définition

рефлекс
1. м.
Непроизвольная - врожденная или приобретенная - реакция живого организма на внешнее раздражение (в физиологии).
2. м.
Вторичное явление, вызываемое другим явлением; отражение, следствие.
3. м.
Изменение тона или увеличение силы окраски предмета, возникающие при отражении света, падающего от соседних освещенных предметов (в оптике).
4. м. разг.
То же, что: рефлексия (1*).

Wikipédia

Stretch reflex

The stretch reflex (myotatic reflex), or more accurately "muscle stretch reflex", is a muscle contraction in response to stretching within the muscle. The reflex functions to maintain the muscle at a constant length. The term deep tendon reflex is often wrongfully used by many health workers and students to refer to this reflex. "Tendons have little to do with the response, other than being responsible for mechanically transmitting the sudden stretch from the reflex hammer to the muscle spindle. In addition, some muscles with stretch reflexes have no tendons (e.g., "jaw jerk" of the masseter muscle)".

As an example of a spinal reflex, it results in a fast response that involves an afferent signal into the spinal cord and an efferent signal out to the muscle. The stretch reflex can be a monosynaptic reflex which provides automatic regulation of skeletal muscle length, whereby the signal entering the spinal cord arises from a change in muscle length or velocity. It can also include a polysynaptic component, as in the tonic stretch reflex.

When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases. This increases alpha motor neuron activity, causing the muscle fibers to contract and thus resist the stretching. A secondary set of neurons also causes the opposing muscle to relax.

Gamma motoneurons regulate how sensitive the stretch reflex is by tightening or relaxing the fibers within the spindle. There are several theories as to what may trigger gamma motoneurons to increase the reflex's sensitivity. For example, alpha-gamma co-activation might keep the spindles taut when a muscle is contracted, preserving stretch reflex sensitivity even as the muscle fibers become shorter. Otherwise the spindles would become slack and the reflex would cease to function.

This reflex has the shortest latency of all spinal reflexes including the Golgi tendon reflex and reflexes mediated by pain and cutaneous receptors.

Traduction de &#39myotactic reflex&#39 en Russe