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Neuroscience > STEP 1 review > Flashcards

STEP 1 review Flashcards

1
Q

location of free nerve endings

A

all skin

epidermis

some visceral organs

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2
Q

location of Meissner corpuscles

A

glabrous (hairless) skin

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3
Q

location of Pacinian corpuscles

A

deep layers of skin

ligaments

joints

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4
Q

location of Merkel discs

A

finger tips

superficial skin

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5
Q

location of Ruffini corpuscles

A

finger tips

joints

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6
Q

neuron fiber type of free nerve endings

A

C: slow, unmyelinated

Adelta: fast, myelinated

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7
Q

neuron fiber type of meissner corpuscles

A

large, myelinated

adapt quickly

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8
Q

neuron fiber type of Pacinian corpuscles

A

large, myelinated

adapt quickly

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9
Q

nerve fiber type of Merkel discs

A

large, myelinated

adapt slowly

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10
Q

neuron fiber type of Ruffini corpuscles

A

capsulated dentritic endings

adapt slowly

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11
Q

what do free nerve endings sense?

A

temperature & pain

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12
Q

what do Meissner’s corpsules sense?

A

proprioception

dynamic, fine touch

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13
Q

what do Pacinian corpuscles sense?

A

vibration & pressure

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14
Q

what do Merkel discs sense?

A

pressure

deep static touch (shape of objects)

proprioception

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15
Q

what do Raffini corpuscles sense?

A

pressure

slippage of objects along skin surface

joint angle change

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16
Q

neurotransmitter profile of anxiety

A

elevated norepinephrine

depressed GABA & serotonin

17
Q

neurotransmitter profile of depression

A

depressed dopamine, norepinephrine, & serotonin

18
Q

neurotransmitter profile of schizophrenia

A

elevated dopamine

19
Q

neurotransmitter profile of Alzheimer disease

A

decreased ACh in basal nucleus of Maynert

20
Q

neurotransmitter profile of Huntington disease

A

decreased ACh & GABA

increased Dopamine

21
Q

neurotransmitter profile of Parkinson disease

A

increased ACh & Serotonin

decreased Dopamine

22
Q

nerves of corneal reflex

A

afferent: nasociliary branch of ophthalmic (V1)
efferent: temporal branch of VII controls orbicularis oculi

23
Q

nerves of lacrimal reflex

A

afferent: V1 (ophthalmic)
efferent: VII

24
Q

nerves of jaw jerk reflex

A

afferent: V3 sensory from muscle spindles of masseter muscle
efferent: V3 motor control of masseter muscle

25
Q

nerves of pupillary reflex

A

afferent: II
efferent: III

26
Q

nerves of gag reflex

A

afferent: IX
efferent: X

Neuroscience (2 decks)

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