extensor

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Related to Extensors: extensor muscle

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 ?
In a recent thorough review of lateral epicondylitis, Faro and Wolf (4) stated that its treatment "has been shaped by a shift in understanding of the disease process from a phenomenon of inflammation to one of degeneration of a portion of the extensor tendon origin.
Looking at the bottom of Figure 7, muscle work averaged 2401 work units and the greatest work done was for the latissimus dorsi, back extensors, and triceps muscles in this series.
Older women, especially those with pre-existing cervical kyphosis or prior surgery, would be expected to have weaker neck extensors than older men and may be particularly susceptible to this complication.
Our previous studies have demonstrated the benefits of the VIKMHNP for ambulation compared with FNS-only systems, namely, the ability to replace the function of eccentric knee extensors to absorb power and restore knee flexion during stance phase [17].
Acute WBV did not affect reflex latency, EMD, and isokinetic peak torque of knee extensors (Table 2).
Studies on gender differences in back extensors muscles endurance capacity has been inconsistent and inconclusive while the underlying mechanisms explaining these differences are poorly understood.
In this scenario the hip flexors and knee extensors become overworked while the knee flexors and hip extensors become limited in their actions.
Exercises for the non-weight-bearing strengthening group consisted of pulley exercises for four different lower limb muscle groups (knee extensors, knee flexors, hip extensors, hip abductors) in a seated or lying position with no weight borne through the foot or leg.
When researchers evaluated lower-extremity injuries in female collegiate athletes they concluded that there was a trend for higher rates of injury with strength imbalances of the knee flexors in relation to knee extensors (1).
This causes the ECU to lose its ability to stabilize the wrist against the radial wrist extensors.