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Stage 1 Neurobiology > NB14 > Flashcards

NB14 Flashcards

1
Q

Hair follicle receptors

A

Description: A-beta fibre wrapped around hair in epidermis and dermis, unencapsulated detect:motion

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2
Q

Free nerve endings

A

Description: C fibres with dendritic tree in epidermis or A-delta with dendritic tree in epidermis detect nocious stimuli in the skin

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3
Q

Meissner corpuscle

A

Description: nuclei in epidermis info carried away on A-beta fibre in dermis encapsulated detect: tap, flutter 5-40 Hz

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4
Q

Merkel cell

A

Description: cell in epidermis info. carried away on A-beta unencapsulated detect pressure (the harry potter one)

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5
Q

Pacinian corpuscle

A

deep in dermis many llamelae around A-beta nerve ending encapsulated detect vibration 60-300Hz

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6
Q

. Define Encapsulated receptors

A

have a special capsule which encloses a nerve ending.

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7
Q

Unencapsulated receptors - define

A

these have no special structure and are basically free nerve endings. Examples are pain receptors, temperature receptors, Merkel disks (touch), hair root plexus.

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8
Q

Ruffini corpuscle

A

Description: deep in dermis free ______ endings info carried on A-beta encapsulated Detect: stretch type movemrtn and slip ( like a penguin with ruffled feathers)

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9
Q

Lateral inhibition

A

bipolar nerve with stronger impulse inhibits 2nd order neurones receiving impulses from peripheral bipolar neurones

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10
Q

Divergence

A

1st order neurone synapses with many 2nd order synapsing with many 3rd order

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11
Q

Convergence

A

2 or more 1st order neurones synapse on the same 2nd order neurone

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12
Q

Sensory receptors in the skin that are rapid adapting

A

meissner corpuscle , some hair follicle receptors and pascinian corpuscles are all ________ adapting.

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13
Q

Sensory receptors in the skin that are slow adapting

A

merkel cells, some hair follicle receptors and ruffini corpuscles are all ________ adapting.

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14
Q

rapid adapting

A

receptor responds to application and removal of stimulus, not for full duration of a maintained stimulus. detects vibrations

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15
Q

slow adapting

A

receptor responds to full duration of a maintained stimulus. detects between hard and soft touch

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16
Q

meaning or which receptor in skin is it?

Description: A-beta fibre wrapped around hair in epidermis and dermis, unencapsulated detect:motion

A

Hair follicle receptors

17
Q

meaning or which receptor in skin is it?

Description: C fibres with dendritic tree in epidermis or A-delta with dendritic tree in epidermis detect nocious stimuli in the skin

A

Free nerve endings

18
Q

meaning or which receptor in skin is it?

Description: nuclei in epidermis info carried away on A-beta fibre in dermis encapsulated detect: tap, flutter 5-40 Hz

A

Meissner corpuscle

19
Q

meaning or which receptor in skin is it?

Description: cell in epidermis info. carried away on A-beta unencapsulated detect pressure (the harry potter one)

A

Merkel cell

20
Q

meaning or which receptor in skin is it?

deep in dermis many llamelae around A-beta nerve ending encapsulated detect vibration 60-300Hz

A

Pacinian corpuscle

21
Q

meaning or which receptor in skin is it?

have a special capsule which encloses a nerve ending.

A

. Define Encapsulated receptors

22
Q

meaning or which receptor in skin is it?

these have no special structure and are basically free nerve endings. Examples are pain receptors, temperature receptors, Merkel disks (touch), hair root plexus.

A

Unencapsulated receptors - define

23
Q

meaning or which receptor in skin is it?

Description: deep in dermis free ______ endings info carried on A-beta encapsulated Detect: stretch type movemrtn and slip ( like a penguin with ruffled feathers)

A

Ruffini corpuscle

24
Q

meaning or which receptor in skin is it?

bipolar nerve with stronger impulse inhibits 2nd order neurones receiving impulses from peripheral bipolar neurones

A

Lateral inhibition

25
Q

meaning or which receptor in skin is it?

1st order neurone synapses with many 2nd order synapsing with many 3rd order

A

Divergence

26
Q

meaning or which receptor in skin is it?

2 or more 1st order neurones synapse on the same 2nd order neurone

A

Convergence

27
Q

meaning or which receptor in skin is it?

meissner corpuscle , some hair follicle receptors and pascinian corpuscles are all ________ adapting.

A

Sensory receptors in the skin that are rapid adapting

28
Q

meaning or which receptor in skin is it?

merkel cells, some hair follicle receptors and ruffini corpuscles are all ________ adapting.

A

Sensory receptors in the skin that are slow adapting

29
Q

meaning or which receptor in skin is it?

receptor responds to application and removal of stimulus, not for full duration of a maintained stimulus. detects vibrations

A

rapid adapting

30
Q

meaning or which receptor in skin is it?

receptor responds to full duration of a maintained stimulus. detects between hard and soft touch

A

slow adapting

Stage 1 Neurobiology (16 decks)

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