twitch

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twitch

 [twich]
a brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it.

twitch

(twich),
1. To jerk spasmodically.
2. A momentary spasmodic contraction of a muscle fiber.
[A.S. twiccian]

twitch

(twich) a brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it.

twitch

(twĭch)
v. twitched, twitching, twitches
v.tr.
To draw, pull, or move suddenly and sharply; jerk: I twitched my fishing line.
v.intr.
1. To move jerkily or spasmodically.
2. To ache sharply from time to time; twinge.
n.
1. A sudden involuntary or spasmodic muscular movement: a twitch of the eye.
2. A sudden pulling; a tug: The fish gave my line a twitch.
3. A sudden, sharp pain.

twitch′ing·ly adv.

twitch

Etymology: AS, twiccian
1 the contraction of small muscle units, manifested as a quick, simple, spasmodic contraction of a muscle.
2 to jerk convulsively.

twitch

Body twitch Sleep disorders A small body movement–eg, a facial grimace or finger jerk, not usually associated with arousal. See REM twitch.

twitch

(twich)
1. To jerk spasmodically.
2. A momentary spasmodic contraction of a muscle fiber.
[A.S. twiccian]

twitch

A brief muscular contraction resulting from a sudden spontaneous impulse in a nerve supplying a group of muscle fibres. Twitching is common and is seldom of any medical significance.

twitch

momentary contraction of muscle fibre

twitch

(twich)
1. To jerk spasmodically.
2. Momentary spasmodic contraction of a muscle fiber.
[A.S. twiccian]

twitch,

n 1. the contraction of small muscle units, manifested as a quick, simple, spasmodic contraction of a muscle.
2. a short, sudden pull or jerk.

twitch

1. a brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it.
2. a device used in the restraint of horses; there are a great many designs. The standard twitch consists of a loop of cord or chain at the end of a short, 2 ft (0.6 m), wooden handle. A fold of muzzle is enclosed in the loop which is then screwed tight. The handle may be held by an assistant or tied to the halter.
Enlarge picture
Twitch. By permission from Knottenbelt DC, Pascoe RR, Diseases and Disorders of the Horse, Saunders, 2003

Galvayne's twitch
a loop of soft rope is passed over the poll and through the mouth, below the upper lip but in front of and above the incisor teeth.
halter twitch
the shank of the halter is passed over the poll and back to the near side through the mouth and then through the halter again.
human twitch
for restraining horses, it consists of a hinged metal device which is placed over the upper lip and clipped to the halter.
leg twitch
a tourniquet applied above the carpal joint.
loop twitch
a loop in a soft rope is passed over the poll and through the mouth above the tongue and pulled tight.
Martingale twitch
see humane twitch.
screw twitch
has the same effect as the standard twitch but the loop is of rigid metal and it is closed by screwing a bar up to clamp the fold of muzzle skin.

Patient discussion about twitch

Q. What causes twitching I deal with insomnia,and sometimes i sleep very sound. What causes the twitching during sleeping.Went to bed at 10 pm, and 2 30 this morning my boyfriend was woke up by me twitching. What is the cause of this. I also drink alot of coffee, could that be a factor with it.

A. Twitching during sleep is not something we can control, and it is a very normal event during sleep. Some people experience it more than others, and it's not necessarily connected to you drinking a lot of coffee. Caffiene consumtion can cause slight tremor but not during sleep. Twiching while awake is caused by small fibers of muscles contracting and is also normal. Heavy twiching is something that requires further blood test because certain electrolyte imbalances can cause it.

Q. my sons arm started twitching in the mornings. is that normal? it's scary, not every morning, but once in a while (twice a week maybe more) he's right arm just twitches without control for 2-3 minutes. can i stop it? should i try to restrain him? does any one know this situation?

A. was your son ever diagnosed for epilepsy? if this is the case, it's not dangerous (unless he holds a knife...) so don't restrain him - it can do only damage. but you should be aware that if the seizure does not stop after 3-5 minutes- you should call an ambulance. and don't panic, your son will be O.K :)

Q. eyelids what causes your eye lids too twitch? my left eye lid has been twitching on and off for about a week what causes it and how can i get it to stop.

A. Not an answer, just another question - how long can this go on? My eyelid has been twitching, (likely lack of sleep) for almost a month now. Any treatment that I should seek?

More discussions about twitch
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