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Neuroscience > Lamina Of Grey Matter > Flashcards

Lamina Of Grey Matter Flashcards

1
Q

Lamina I location

A

tip of the dorsal horn

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2
Q

Lamina I cells respond to….. stimuli

A

noxious or thermal stimuli

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3
Q

Lamina I sends information to the brain by

A

the contralateral spinothalamic tract

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4
Q

Lamina I corresponds ton

A

the nucleus marginalis

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5
Q

Lamina II Involved in sensation of

A

noxious and non-noxious stimuli

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6
Q

noxious

A

Poisonous and harmful

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7
Q

This lamina contributes to the brain’s interpretation of incoming signals as painful, or not.

A

Lamina ll

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8
Q

Lamina ll Sends information to

A

Lamina III and IV (nucleus proprius)

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9
Q

Lamina II Corresponds to

A

substantia gelatinosa

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10
Q

Lamina III is involved in

A

proprioception and sensation of light touch.

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11
Q

Cells in Lamina III connects with cells in layers

A

IV, V and VI.

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12
Q

Lamina III Partially corresponds to

A

nucleus proprius

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13
Q

Lamina IV is Involved in

A

non-noxious sensory information relay and processing.

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14
Q

Lamina IV Cells connect with those in

A

lamina II

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15
Q

Lamina IV Partially corresponds to

A

nucleus proprius

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16
Q

Lamina V is involved in

A

Relays sensory, including nociceptive (potentially painful), information to the brain

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17
Q

How does Lamina V Relays sensory, including nociceptive (potentially painful), information to the brain

A

via the contralateral and spinothalamic tracts

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18
Q

Lamina V Receives descending information from the brain via

A

corticospinal and rubrospinal tracts.

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19
Q

Lamina VI Contains many small interneurons involved in

A

spinal reflexes

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20
Q

Lamina VI Receives sensory information from …… and is involved in ….

A

muscle spindles

proprioception

21
Q

Lamina VI Sends information to the brain via

A

ipsilateral spinocerebellar pathways

22
Q

Lamina VII is

A

Large, heterogenous zone that varies through the length of the spinal cord.

23
Q

Lamina VII Receives information from

A

Lamina II to VI, and from viscera

24
Q

Lamina VII is involved in

A

Relays motor information to the viscers

25
Q

Lamina VII Gives rise to cells involved in

A

the autonomic system

26
Q

Lamina VII partially corresponds ton

A

Dorsal nucleus of Clarke

27
Q

Lamina VIII Varies depending on….. and is most prominent in …..

A

spinal cord level

cervical and lumbar enlargements.

28
Q

subcortical tracts

A

Rubrospinal, vestibulospinal, reticulospinal, tectospinal

29
Q

This lamina contains Cell bodies that are relayed stations for the subcortical tracts and Cells are involved in modulating motor output to skeletal muscle

A

Lamina VIII

30
Q

Lamina IX Size and shape

A

varies between spinal cord levels

31
Q

Lamina IX contains

A

Distinct groups of motor neurons that innervate skeletal muscle.

32
Q

Lamina X location

A

Surrounds the central canal – the grey commissure

33
Q

Posterior marginal nucleus is important for relaying

A

pain (fast pain-AƔ)and temperature sensation

34
Q

Substantia gelatinosa is lamina …. and is located at …

A

II

the top of the dorsal horn,

35
Q

the SG is important for relaying

A

pain (slow pain-C), temperature and pain modulation

36
Q

Tracts passing through posterior marginal nucleus

A

ant/lat. spinothalamic tract

37
Q

Tracts passing through Substantia gelatinosa

A

ant/lat. spinonothalamic tract, spinal/ trigeminal nucleus

38
Q 
What lamina is 
MZ (Posterior marginal nucleus)
Nucleus proprius
Substantia gelatinosa
Clarke’s nucleus
A

I
III-IV
II
VII

39
Q

Nucleus proprius located in

A

neck’ of the dorsal horn,

40
Q

the NP function is it relays

A

pain and temperature (C+AƔ) touch and vibration (A-B), proprioception(1a) sensation to the brain

41
Q

Tracts that pass NP

A

spinonothalamic tract, medial lemniscus

42
Q

…..is the most dorso-medial nuclei

A

Clarke’s nucleus (DNC)

43
Q

DNC functions

A

relays unconscious proprioceptive information to the brain

44
Q

DNC IS FOUND IS SPINAL SEGMENTS WHAT

A

C8 to L3.

45
Q

Interomediolateral nucleus located in

A

intermediate column and lateral horn

46
Q

IMN FUNCTIONS (Interomediolateral nucleus)

A

relays sensory information from viscera to the brain

and autonomic signals from the brain to the visceral organs.

47
Q

Lateral motor neurons and medial motor neurons

(MNs) – located in

A

the ventral horn

48
Q

Lateral motor neurons and medial motor neurons are composed of

A

motor neurons that innervate visceral and skeletal muscles.

Neuroscience (23 decks)

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