Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CNS > [HISTO] GREY & WHITE MATTER OF SPINAL CORD > Flashcards

[HISTO] GREY & WHITE MATTER OF SPINAL CORD Flashcards

1
Q

Spinal cord enlargements?
why do they exist?

A

cervical
lumbar
because they innervate the extremeties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

spinal nerves

A

31 pairs
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

spinal nerves are attached to spinal cord via

A

dorsal root
ventral root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

dorsal root is purely

A

sensory (afferent)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

ventral root is purely

A

motor (efferent)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

nerve cells of dorsal root ganglion

A

pseudounipolar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are the two processes of dorsal root ganglion cells

A

peripheral= dendrites=connected to receptors
central=axons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

root fibers bifurcate into

A

long ascending fibers
short descending fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

topography of spinal cord

A

2 symmetrical halves
separated by anterior medialn fissure
separated posteriorly by posterior median septum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

two halves of spinal cord are connected by

A

gray & white commisures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

fissures of spinal segments (5)

A

anterior median fissure
posterior median septum
anterior lateral sulcus
posterior lateral sulcus
posterior intermediate sulci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

transverse section of spinal cord shows

A

H-shaped grey matter surrounded by white matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

grey matter consists of

A

two dorsal horns
two ventral horns
two lateral horns (thoracolumbar)
central canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

which type of cells line the central canal?

A

ependymal cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

lateral horns are present in

A

all thoracic segments
upper two/three lumbar segments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

oval large spinal segment

A

cervical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

rounded spinal segments

A

thoracic
lumbar
sacral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

large spinal segments

A

cervical
lumbar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

spinal segments w thin posterior horns

A

cervical
thoracic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

spinal segments w thick posterior horns

A

lumbar
sacral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

spinal segment w thin anterior horn

A

thoracic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

spinal segments w thick anterior horn

A

cervical
lumbar
sacral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

white matter is greater only in which spinal segment

A

cervical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

grey mater spinal cord is formed of

A

multipolar cells
nerve cells + processes
neuroglia
blood capillaries
unmyelinated nerve fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
cells of posterior horn & intermediate gray
golgi type i= long axons=form long ascending tracts golgi type ii=short axons=terminate in gray matter near where they originate
26
nerve cells in grey matter are arranged in
nuclei
27
sensory nuclei
1-posteromarginal nuclei 2-substantial gelatinosa 3-nucleus proprius 4-reticular nucleus 5-dorsal nucleus of Clark 6-intermedio-medial nucleus 7-post & ant grey commisural nuclei
28
Clarke's nucleus is found in
C8-L3
29
motor nuclei are
somatic efferents axons innvervate skeletal muscle
30
motor nuclei types
large alpha neurons small gamma neurons
31
large alpha neurons innervate
extrafusal skeletal muscle fibers
32
small gamma neurons innervate
contractile part of intrafusal fibers
33
two groups of motor nucleui of anterior horn
medial nuclear group lateral nuclear group
34
medial nuclear group is divided into
antro-medial nucleus= all levels postro-medial nucleus= cervical + lumbar
35
nuclei of medial nuclear group supply
muscles of neck & back
36
muscles attached to axial skeleton are supplied by
antro-medial & postro-medial nucleus
37
lateral nuclear group is divided into
anterior nucleus antro-lateral nucleus postro-lateral nucleus retropostro-lateral nucleus central nucleus
38
lateral nuclear group subdivisions in thoracic segments
NONE groups form one nucleus only
39
lateral nucleus is found in
cervical lumbar
40
most medial muscles are supplied by
most medial nuclei
41
most distal muscles are supplied by
most lateral nuclei
42
hands are supplied by
retropostrolateral column of CERVICAL segments
43
feet are supplied by
retropostrolateral column of LUMBAR segments
44
flexor muscles are supplied by
dorsal cell columns
45
extensor muscles are supplied
ventral cell columns
46
nuclei of lateral horn
intermedio-lateral nucleus
47
intermedio-lateral nuclei are found in
T1-L2 or L3
48
sacral autonomic nuclei
S2-S4 preganglionic parasympathetic fibers
49
preganglionic parasympathetic fibers arise from
sacral autonomic nuclei
50
preganglionic sympathetic fibers arise from
intermedio-lateral nucleus
51
lamina
region w similar properties of neurons such as size, shape, packing, density, cytological features
52
lamina I corresponds to
posteromarginal nucleus
53
lamina II corresponds to
substantian gelatinosa
54
lamina III & IV corresponds to
nucleus proprius
55
lamina V extends across
neck of posterior horn
56
lamina V is divided into? EXCEPTION?
medial & lateral parts EXCEPT in thoracic segments
57
lamina V lateral part corresponds to
reticular nucleus
58
lamina VI extends across
base of posterior horn
59
lamina VI is divided into
medial & lateral parts
60
lamina VII corresponds to
Clarke's nucleus intermediomedial nucleus intermediolateral nucleus
61
lamina VIII recieves termination of
extrapyramidal tracts
62
lamina receiving termination of extrapyramidal tracts
lamina VIII
63
lamina VIII extends across
medial part of anterior horn
64
lamina IX corresponds to
nuclear groups of anterior horn (med & lat motor groups)
65
lamina X represents
central gray substance surrounding central canal
66
position of white matter in spinal cord
peripheral
67
white matter is divided into (3)
posterior white column anterior white column lateral white column
68
posterior white column position
b/w posteromedial septum (midline) & entry of posterior nerve roots
69
lateral white column position
b/w entry of post nerve roots & emergence of ant roots
70
anterior white column position
b/w emergence of anterior nerver roots & anteromedial fissure
71
anterior white column position
b/w emergence of anterior nerves roots & anteromedial fissure (midline)
72
white matter is formed of (4)
myelinated nerve fibers neuroglia blood vessels grouped into tracts
73
tract definition
group of nerve fibers w same origin, course, termination & function
74
tracts of white matter
long tracts short tracts
75
long tracts of white matter are divided into
ascending=exteroceptive tracts & proprioceptive tracts descending=pyramidal & extrapyramidal tracts
76
short tracts of white matter are divided into (5)
1-comma-shaped tract 2-septomarginal tract 3-lissauer's tract 4-fasciculus proprius tract 5-exteroceptive ascending tracts
77
exteroceptive ascending short tract function
carry temp, pain, crude touch to sensory tract
78
tracts extending beyond spinal cord
long tracts
79
tracts ending in spinal cord
short tracts
80
which type of ascending tract is the spinothalamic tract
exteroceptive
81
which type of ascending tract is the dorsal column tract
proprioceptive
82
tracts of conscious proprioception
gracile cuneate
83
tracts of unconscious proprioception
anterior spinocerebellar posterior spinocerebellar spino-olivary collateral of cuneate tract
84
sensations reaching cortex
conscious proprioception
85
sensations stopping at the cerebellum
unconscious proprioception
86
nuclei responsible for the transmission of visceral afferent impulses
intermedio-medial nucleus

CNS (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions