jerk (redirected from Jerk (physics))

jerk (jurk) a sudden reflex or involuntary movement.jer´ky

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Achilles jerk , ankle jerk triceps surae reflex.

biceps jerk  see under reflex.

elbow jerk  triceps reflex.

jaw jerk  see under reflex.

knee jerk , quadriceps jerk patellar reflex.

tendon jerk  see under reflex.

triceps surae jerk  see under reflex.

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jerk (jûrk)

v.

To make spasmodic motions.

n.

1. A sudden reflexive or spasmodic muscular movement. See deep reflex.

2. jerks Involuntary convulsive twitching often resulting from excitement. Often used with the.

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jerk,

1 a sudden abrupt motion such as a thrust, yank, push, or pull.

2 a quick muscular contraction induced when a tendon over a bone is tapped. See also spasm.

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jerk [jerk]

a sudden reflex or involuntary movement.

Achilles jerk (ankle jerk) plantar extension of the foot elicited by a tap on the achilles tendon, while the patient is seated on a bed or chair, with feet hanging freely; called also Achilles reflex and triceps surae jerk or reflex.

biceps jerk biceps reflex.

elbow jerk involuntary flexion of the elbow on striking the tendon of the biceps or triceps muscle.

jaw jerk jaw-jerk reflex.

knee jerk see knee jerk.

tendon jerk tendon reflex.

triceps surae jerk ankle jerk.

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jerk

a sudden reflex or involuntary movement.

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ankle jerk

see gastrocnemius reflex.

biceps jerk

called also elbow jerk; see biceps reflex.

elbow jerk

see biceps jerk (above).

jerk nystagmus

see vestibular nystagmus.

patellar jerk

see patellar reflex.

tendon jerk

see tendon reflex.