Spinal Reflexes Flashcards

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1
Q

Monosynaptic Reflex

A

alpha motor neuron contracts agonist muscle

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2
Q

Reciprocal Inhibition

A

Efferent impulses to antagonost muscles are damped

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3
Q

Inverse Stretch Reflex

A

Golgi tendon organ relfex
Caused by afferent nerves from GTO
Protective mechanism

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4
Q

Effects of increasing firing APs from GTO

A

Activation of inhibitory interneurons to agonist
Activation of excitatory interneurons to antagonistic muscles
Alpha motor neuron is inbited
Muscle is relaxed

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5
Q

Flexor (Withdrawal) Reflex

A

Uses information from nociceptors

Polysynaptic

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6
Q

Effects of painful stimulus

A

Increased activity in the flexor muscles via excitatory muscles
Contralateral extensors are excited
Contralateral flexors are inhibited

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7
Q

Purpose of contralateral limb

A

Maintain upright posture

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8
Q

How is the GTO reflex overidden

A

Voluntary input from the CNS

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