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Unformatted text preview: : sensory neurons enter & motor neurons exit spinal cord on opposite sides- somatic spinal reflexes : o stretch reflex: causes contraction of skeletal muscle in response to muscle stretching sensory receptors are muscle spindles o tendon reflex : causes muscle relaxation in response to increasing muscle tension (to prevent tendons from tearing) sensory receptors are (Golgi) tendon organs o flexor (withdrawal) reflex : causes muscle contraction to move body region away from painful stimulus plantar flexion reflex : curling under of toes in response to stimulation of lateral outer margin of toe damage to descending motor pathways causes great toe extension (Babinski sign), although a normal response in infants o crossed extensor reflex : works with withdrawal reflex to maintain balance contraction of extensors on opposite side of body to compensate for withdrawal (contralateral reflex) page5...
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- Fall '10