Definition
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Examination of spinal reflexes tests the integrity of the sensory and motor components of the reflex are and the influence of descending motor pathways on the reflex.
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Three kinds of responses may be seen. Absence or depression of a reflex indicates complete or partial loss of either sensory or motor (LMN) component of the reflex; a normal response indicates that both sensory and motor components are intact; and an exaggerated response indicates an abnormality in the motor pathways (UMN) that normally have an inhibitory influence on the reflex or a deficit of the opposing muscles, if paresis is also present the reflexes are
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Myotatic (Stretch) reflex : or Quadriceps (Knee Jerk, Patellar) reflex
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Cranial tibia reflex
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Gastrocnemius reflex
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Extensor carpi radialis reflex
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Triceps reflex
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Biceps reflex
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Flexor (pedal, with drawl) reflexes
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Extensor thrust reflex
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Perineal (Bulbocavernosus, Anal) reflex
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Crossed extensor reflex
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Extensor toe (Babinski- plantar) reflex
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Last modified: Sunday, 4 December 2011, 9:52 AM