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Reflexes. Reflexes. Normal reflexes depend on normal function in the nervous system There are two kinds of reflexes 1. Somatic or Deep reflexes A. stretch reflexes – achilles, patellar tendon reflexes B. withdrawal reflexes 2. Superficial or cutaneous reflexes. Testing reflexes.

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reflexes1
Reflexes
  • Normal reflexes depend on normal function in the nervous system
  • There are two kinds of reflexes
    • 1. Somatic or Deep reflexes
        • A. stretch reflexes – achilles, patellar tendon reflexes
        • B. withdrawal reflexes
    • 2. Superficial or cutaneous reflexes
testing reflexes
Testing reflexes
  • Use the flat end of the reflex hammer!
  • Use a sharp, quick tap – don’t be a wimp!
  • Sometimes you can’t observe a reflex – don’t panic, it’s probably you or your “patient” is nervous and not relaxed
  • An absent reflex could mean a delay or prevention of sensory transmission along a lower motor neuron
    • But hypothyroidism can also produce this
  • An overactive reflex can result from disruptions in the upper motor neurons in the spinal cord or brain
    • Can result from hyperthyroidism
achilles reflex
Achilles Reflex
  • Tests the S1,S2 nerve roots and the sciatic nerve
  • Have your partner sit on a chair or table so that both feet hang over the edge
  • Locate the achilles tendon of the right foot and tap it with the reflex hammer
  • What happens?
patellar
Patellar
  • Tests the L3,L4 nerve roots and the femoral nerve
  • Have your partner sit on a chair or table sp that both feet hang over the edge
  • Locate the patellar tendon of the right leg and tap it with the hammer
  • What happens?
  • Have your partner count down from 99 to 32
  • Tap it again – was the response greater or less?
  • Repeat this on the left leg?
biceps reflex
Biceps Reflex
  • Tests the C5,C6 nerve roots and the musculocutaneous nerve
  • Have your partner rest their arm on a table with the palm facing up
  • Place your thumb on the biceps tendon – have your partner flex their forearm to help find it
  • Tap your thumbnail with the hammer
  • What happens?
triceps reflex
Triceps reflex
  • Tests the C7,C8 nerve roots and the radial nerve
  • Have your partner flex one arm at the elbow and hold their arm
  • Tap the triceps tendon with the hammer using the pointed end
  • What happens?
  • Test each arm
superficial reflex the babinski reflex
Superficial Reflex – The Babinski reflex
  • Using the handle of the hammer – stroke the underside of you partner’s foot using an upward motion from heel to toes
  • What happens?
ciliospinal
Ciliospinal
  • Have one person sit in a chair – observe their pupils
  • Have another person unexpectedly touch a piece of ice to the back of the neck
  • What happens?
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