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29 Cards in this Set
- Front
- Back
The three types of reflexes include:
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Muscle stretch, Golgi tendon organ reflex and flexir withdrawl reflex
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Senosry receptor involved with muscle stretch and location
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Muscle spindle; muscle
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Motor nueron involved with muscle stretch reflex
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Gamma motor neuron in the ventral horn
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Muscle stretch reflexes are ___synaptic
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mono
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An example of a muscle stretch reflex is the ______ which stretches the _____ and is a ______
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knee-jerk; quadricpes muscle; DTR
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The muescle spindle excvites sensory neurons located in the ____
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DRG
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Hyporeflexia
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Diminshment of DTR due to peripheral nerve injury
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Areflexia
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Adbsence of DTR
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Hyperreflxia
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Reflex becomes hyperactive
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Triceps reflex tests ____ innervated by _____ and ____ peripheral nerve
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tricpes brachii, C6,C7, radial (C7-C8)
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Biceps reflex tests ____ innervated by _____ and ____ peripheral nerve
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biceps brachii, C5,C6, musculocutaneous
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Patellar reflex tests ____ innervated by _____ and ____ peripheral nerve
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quadrceps femoris, L3/L4, femoral nerve
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Achilles reflex tests ____ innervated by _____ and ____ peripheral nerve
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gastroencemus and soleus, S1 and S2, tibial
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The muscle stretch reflex is known as the ____ loop
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Gamma loop
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How does one assess muscle tone?
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Passively extend and flex the limbs
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What are the components of an upper motor lesion?
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Spastic paralysis with hyperrelfexia
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What does a flexor-withdraw reflex involve?
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Skin receptors and movement of a whole .limb that experiences painful stimulus
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Mechanism of flexor-withdraw
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Pain receptors activate excitatory interneurons which synapse with flexor muscles to withdraw the limb
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A Golgi tendon reflex provides information on ___________
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The amount of tension in a muscle
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A Golgi tendon reflex leads to ________
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Relaxation of the muscle since there is an inihibition of the motor nuerons
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The muescle spindle excvites sensory neurons located in the ____
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DRG
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Hyporeflexia
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Diminshment of DTR due to peripheral nerve injury
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Areflexia
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Adbsence of DTR
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Hyperreflxia
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Reflex becomes hyperactive
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Triceps reflex tests ____ innervated by _____ and ____ peripheral nerve
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tricpes brachii, C6,C8, radial
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Hypo or are reflexia indicate _______ damage
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peripheral nerve or spinal cord segment
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Hyper reflexia indicates ____ damage
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descending neural tract since desceding systems inhibt segmental reflexs
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Define: Spasticity
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Increased muscle tone (hypertonia)
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Define: clonus
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Prolonged oscillation of contraction and relaxation of the limb
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