Lamina Of Grey Matter

Question 1

Lamina I location

Answer 1

tip of the dorsal horn

Question 2

Lamina I cells respond to….. stimuli

Answer 2

noxious or thermal stimuli

Question 3

Lamina I sends information to the brain by

Answer 3

the contralateral spinothalamic tract

Question 4

Lamina I corresponds ton

Answer 4

the nucleus marginalis

Question 5

Lamina II Involved in sensation of

Answer 5

noxious and non-noxious stimuli

Question 6

noxious

Answer 6

Poisonous and harmful

Question 7

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

Answer 7

Lamina ll

Question 8

Lamina ll Sends information to

Answer 8

Lamina III and IV (nucleus proprius)

Question 9

Lamina II Corresponds to

Answer 9

substantia gelatinosa

Question 10

Lamina III is involved in

Answer 10

proprioception and sensation of light touch.

Question 11

Cells in Lamina III connects with cells in layers

Answer 11

IV, V and VI.

Question 12

Lamina III Partially corresponds to

Answer 12

nucleus proprius

Question 13

Lamina IV is Involved in

Answer 13

non-noxious sensory information relay and processing.

Question 14

Lamina IV Cells connect with those in

Answer 14

lamina II

Question 15

Lamina IV Partially corresponds to

Answer 15

nucleus proprius

Question 16

Lamina V is involved in

Answer 16

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

Question 17

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

Answer 17

via the contralateral and spinothalamic tracts

Question 18

Lamina V Receives descending information from the brain via

Answer 18

corticospinal and rubrospinal tracts.

Question 19

Lamina VI Contains many small interneurons involved in

Answer 19

spinal reflexes

Question 20

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

Answer 20

muscle spindles

proprioception

Question 21

Lamina VI Sends information to the brain via

Answer 21

ipsilateral spinocerebellar pathways

Question 22

Lamina VII is

Answer 22

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

Question 23

Lamina VII Receives information from

Answer 23

Lamina II to VI, and from viscera

Question 24

Lamina VII is involved in

Answer 24

Relays motor information to the viscers

Question 25

Lamina VII Gives rise to cells involved in

Answer 25

the autonomic system

Question 26

Lamina VII partially corresponds ton

Answer 26

Dorsal nucleus of Clarke

Question 27

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

Answer 27

spinal cord level cervical and lumbar enlargements.

Question 28

subcortical tracts

Answer 28

Rubrospinal, vestibulospinal, reticulospinal, tectospinal

Question 29

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

Answer 29

Lamina VIII

Question 30

Lamina IX Size and shape

Answer 30

varies between spinal cord levels

Question 31

Lamina IX contains

Answer 31

Distinct groups of motor neurons that innervate skeletal muscle.

Question 32

Lamina X location

Answer 32

Surrounds the central canal – the grey commissure

Question 33

Posterior marginal nucleus is important for relaying

Answer 33

pain (fast pain-AƔ)and temperature sensation

Question 34

Substantia gelatinosa is lamina .... and is located at ...

Answer 34

II | the top of the dorsal horn,

Question 35

the SG is important for relaying

Answer 35

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

Question 36

Tracts passing through posterior marginal nucleus

Answer 36

ant/lat. spinothalamic tract

Question 37

Tracts passing through Substantia gelatinosa

Answer 37

ant/lat. spinonothalamic tract, spinal/ trigeminal nucleus

Question 38

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

Answer 38

I III-IV II VII

Question 39

Nucleus proprius located in

Answer 39

neck’ of the dorsal horn,

Question 40

the NP function is it relays

Answer 40

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

Question 41

Tracts that pass NP

Answer 41

spinonothalamic tract, medial lemniscus

Question 42

.....is the most dorso-medial nuclei

Answer 42

Clarke’s nucleus (DNC)

Question 43

DNC functions

Answer 43

relays unconscious proprioceptive information to the brain

Question 44

DNC IS FOUND IS SPINAL SEGMENTS WHAT

Answer 44

C8 to L3.

Question 45

Interomediolateral nucleus located in

Answer 45

intermediate column and lateral horn

Question 46

IMN FUNCTIONS (Interomediolateral nucleus)

Answer 46

relays sensory information from viscera to the brain | and autonomic signals from the brain to the visceral organs.

Question 47

Lateral motor neurons and medial motor neurons | (MNs) – located in

Answer 47

the ventral horn

Question 48

Lateral motor neurons and medial motor neurons are composed of

Answer 48

motor neurons that innervate visceral and skeletal muscles.