| 释义 |
Achilles jerk
Achilles jerkn. A reflex bending of the foot resulting from the contraction of lower leg muscles.Achilles jerk
Achilles jerk[ə′kil·ēz ‚jərk] (physiology) A reflex action seen as plantar flection in response to a blow to the Achilles tendon. Also known as Achilles tendon reflex. Achilles jerk
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" >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.Achilles jerkn. A reflex bending of the foot resulting from the contraction of lower leg muscles.jerk (jerk) A colloquial term for reflex.Achilles jerkAchilles tendon reflex.ankle jerk See: ankle clonus reflexbiceps jerk See: biceps reflexelbow jerkTriceps reflex.jaw jerkChin reflex.knee jerkThe extension of the lower leg upon striking the patellar tendon when the knee is flexed at a right angle. Knee jerk is absent in locomotor ataxia, infantile paralysis, meningitis, destructive lesions of the lower part of the spinal cord, and certain forms of paralysis. It is increased in lesions of pyramidal areas, brain tumors, spinal irritability, and cerebrospinal sclerosis. See: knee-jerk reflextendon jerkThe contraction of a muscle after tapping its tendon. triceps surae jerkAchilles tendon reflex.ThesaurusSeejerk |