DICT.TW Dictionary Taiwan

 knee jerk 名詞
 膝反射,膝跳反射

 Knee jerk. Physiol. A jerk or forward kick of the lower part of the leg produced by a blow or sudden strain upon the patellar tendon of the knee, which causes a sudden contraction of the quadriceps muscle; the patellar reflex.
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 Re·flex n.
 1. Reflection; the light reflected from an illuminated surface to one in shade.
 Yon gray is not the morning's eye,
 'Tis but the pale reflex of Cynthia's brow.   --Shak.
 On the depths of death there swims
 The reflex of a human face.   --Tennyson.
 2. Physiol. An involuntary movement produced by reflex action.
 Patellar reflex. See Knee jerk, under Knee.

 Ten·don n.  Anat. A tough insensible cord, bundle, or band of fibrous connective tissue uniting a muscle with some other part; a sinew.
 Tendon reflex Physiol., a kind of reflex act in which a muscle is made to contract by a blow upon its tendon. Its absence is generally a sign of disease. See Knee jerk, under Knee.
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 knee jerk
      n : a reflex extension of the leg resulting from a sharp tap on
          the patellar tendon [syn: knee-jerk reflex, patellar
          reflex]