What is the response of a muscle stretch reflex?
What is the response of a muscle stretch reflex?
The stretch reflex or myotatic reflex refers to the contraction of a muscle in response to its passive stretching by increasing its contractility as long as the stretch is within physiological limits.
What is an M1 reflex?
Stretching a muscle of the upper limb elicits short (M1) and long-latency (M2) reflexes. When the participant is instructed to actively compensate for a perturbation, M1 is usually unaffected and M2 increases in size and is followed by the voluntary response.
What is the inverse stretch reflex?
The Golgi tendon reflex (also called inverse stretch reflex, autogenic inhibition, tendon reflex) is an inhibitory effect on the muscle resulting from the muscle tension stimulating Golgi tendon organs (GTO) of the muscle, and hence it is self-induced.
What is long latency stretch reflex?
An important component of our compensation to external loads is the “long-latency reflex” (LLR). First identified over 50 years ago, the LLR is evident as a burst of muscle activity occurring 50–100 ms following an imposed limb displacement.
What is the stretch response?
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. When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases.
What is a phasic reflex?
Reflexes that produce a quick, transient response to a stimulus are commonly addressed as phasic. In contrast, reflex contractions that show slow, steady-state contractions are addressed as tonic. Typical examples of phasic reflexes are all the aforementioned monosynaptic and oligosynaptic reflexes.
How is a reflex different from a reaction?
Reactions are voluntary responses whereas reflexes are involuntary or unintentional (and not subject to conscious control in most cases). Each type of response is initiated by a sensory stimulus that may be visual, audible, tactile, olfactory, or gustatory in nature.
What are involuntary reflexes?
What’s a Reflex? A reflex is an involuntary (say: in-VAHL-un-ter-ee), or automatic, action that your body does in response to something — without you even having to think about it. You don’t decide to kick your leg, it just kicks. There are many types of reflexes and every healthy person has them.
What is tonic stretch reflex?
The involuntary mechanism leading to changes in muscle activation and force with its slow stretch is called the tonic stretch reflex, and the dependence of active muscle force on muscle length is called the tonic stretch reflex characteristic. The exact neurophysiological loop of this reflex is unknown.
What is inverse stretch reflex and which receptor initiates it?
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.
What is long latency response?
ALR latency decreases and amplitude increases as a function of age during childhood, up until about age 10 years (Weitman, Fishbin & Graziani, 1965; Whiteman & Graziani, 1968). …
What does long latency mean?
The time that passes between being exposed to something that can cause disease (such as radiation or a virus) and having symptoms.
