extensor


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extensor

 [ek-sten´ser] (L.)
1. causing extension.
2. a muscle that extends a joint; see muscle.

ex·ten·sor

(eks-ten'sŏr, -sōr), [TA]
A muscle the contraction of which causes movement at a joint with the consequence that the limb or body assumes a more straight line, or so that the distance between the parts proximal and distal to the joint is increased or extended; the antagonist of a flexor. See: muscle.
[L. one who stretches, fr. ex-tendo, to stretch out]

extensor

/ex·ten·sor/ (-ser) [L.]
1. causing extension.
2. a muscle that extends a joint.

extensor

(ĭk-stĕn′sər)
n.
A muscle that extends or straightens a limb or body part.

extensor

[iksten′sər]
Etymology: L, extendere, to stretch out
any muscle that extends a body part, such as the extensor indicis, which extends the index finger.

ex·ten·sor

(eks-ten'sŏr) [TA]
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.
See: muscle
[L. one who stretches, fr. ex-tendo, to stretch out]

extensor

a muscle that extends or straightens a limb.

extensor

a muscle, contraction of which tends to straighten or dorsiflex a joint; the antagonist of a flexor

extensor

[L.] any muscle that extends a joint. See Table 13 for list of all muscles.

crossed extensor reflex
extensor postural thrust
a postural reflex reaction tested in small animals by lifting the patient off the ground, then lowering it to see whether the hindlegs are extended to make contact and support weight and several short steps are taken to maintain posture. Called also extensor reaction.
Enlarge picture
Extensor postural thrust response. By permission from Sharp NJH, Small Animal Spinal Disorders, Mosby, 2004
extensor process disease
see pyramidal disease.
extensor reaction
see extensor postural thrust.
extensor rigidity
see under upper motor neuron.
References in periodicals archive ?
Following two sub-maximal attempts, the isokinetic concentric muscle strengths of the flexor and extensor muscles were measured with three repetitions at 60[degrees]/s angular speed and 16 repetitions at 90[degrees]/s angular speed.
Extensor retinaculum, a fascia that holds the tendons of the carpal extensor muscles was observed in the distal row of the carpal bones.
While Checking the surface anatomy of the thumb, we noticed that there is an abnormal lateral division in the extensor pollicis longus tendon at the dorsal aspect of the proximal phalanx.
Demographic history, injury, time to surgery, range of movement, extensor lag, thigh circumference, radiographs, and any complications were recorded.
Group Mean and Standard Errors for 10th, 50th, and 90th Percentile Levels of Activity for the Flexor Digitorum Superficialis, Flexor Pollicis Longus, Extensor Digitorum Communis and Extensor Carpi Radialis Brevis Muscles During Scaling With Four Different Instrument Handles 10th Percentile Inst-A Inst-B Flexor digitorum 11.
This case demonstrates that conservative management of an extensor process fracture can lead to complete bony healing with a full return to flight and function in a free-living bird of prey.
One unanswered question is whether the closure of the fascia overlying the extensor carpi radialis brevis (ECRB) and extensor digitorum communis is truly necessary or advisable.
El extensor digital I largo (extensor digitalis I longus) se destaco por su longitud, asentandose en la profundidad de los musculos extensor digital largo, peroneo tercero y tibial craneal.
The former refers to formal syste- matic rehabilitation treatment; the latter includes the traditional extensor apparatus, improved quadriceps plasty, and arthroscopic lysis.
There were a few areas of normal skin noted on the right side of the trunk and extensor aspect of lower limbs (Figure 3).
The optimal knee extensor strength threshold for differentiating those with and without knee replacement risk was approximately 200 N or 0.

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