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NeuroAnatomy > Reflexes > Flashcards

Reflexes Flashcards

1
Q

5 Types of Reflexes

A 
Stretch
Inverse
Gamma Reflex
Flexor Withdrawal
Crossed Extension
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2
Q

Stretch Stimulus

A

Muscle Stretch

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3
Q

Stretch Reflex Arc

A

Afferent 1a fiber from muscle spindle –> alpha motor neurons –> muscle of origin

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4
Q

Is stretch reflex polysynaptic or monosynaptic

A

Monosynaptic

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5
Q

How is stretch reflex clinically tested?

A

DTR

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6
Q

Stretch reflex reciprocal inhibition

A

Via inhibitory interneuron. Same stretch stimulus inhibits antagonist muscle

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7
Q

Stretch reflex reciprocal innervation

A

Effects f a stretch simulus on agonist, antagonist ad synergistic muscles

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8
Q

Stimulus for Inverse stretch reflex

A

Muscle Contraction

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9
Q

Reflex arc for inverse stretch reflex

A

Afferent Ib fiber from golgi tendon orgon via inhibitory interneuron to muscle or oigin

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10
Q

Is inverse stretch reflex monosynaptic or poly?

A

Polysynatpic

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11
Q

Stretch reflex is part of which loop?

A

Gamma reflex

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12
Q

Which loop allows muscle tension to come under control of descending pathways?

A

Gamma reflex loop

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13
Q

Stimulus for flexor withdrawal reflex?

A

Cutaneous sensory stimuli

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14
Q

REflex arc for flexor withdrawal reflex

A

Cutatneous receptors via interneurons to largely flxor muscles

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15
Q

Is flexor withdrawal mono or polysnaptic?

A

Polysnaptic

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16
Q

Function of flexor reflex?

A

Protective withdrawal mechanism to remove body part from harmful stimuli

17
Q

Crossed extension reflex stimulus

A

Noxious stimuli and reciprocal action of antagonist (Flexors on one side excited, so extensors inhibit and opposite on other side)

18
Q

Reflex arc of crossed extension reflex

A

Cutaneous and muscle receptors meet sC motor neurons

19
Q

Crossed extension reflex mono or polysynaptic?

A

Polysnaptic

20
Q

Which reflex controls gait?

A

Crossed extension

NeuroAnatomy (9 decks)

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