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trisemester 3 TCC > Neuro test 1 PWP Cisterns & CSF > Flashcards

Neuro test 1 PWP Cisterns & CSF Flashcards

1
Q

how many major cisterns does the brain have

A

5

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2
Q

where are cisterns located

A

subarachnoid space

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3
Q

cisterns hold

A

CSF

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4
Q

cerebellomedullary cistern is also known as

A

cistern magna

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5
Q

Largest cranial cistern is the

A

cistern magna

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6
Q

cerebellomedullary cistern is ______ to the brainstem

A

dorsal

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7
Q

which ventricle drain into the cisterna magna?

A

4th ventricle

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8
Q

how many openings does the 4th ventricle pas through to get into the cistern magnum

A

3

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9
Q

the 3 openings of the cerebellomedullary cistern is

A

2- lateral luschka

1- median madendie/median aperture

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10
Q

how many foramen magendie does an adult have?

A

1

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11
Q

CSF flow

A
  1. lateral ventricle >
    Foramen monro>
  2. third ventricle
  3. aqueduct of sylvius > 4th ventricle
  4. CSF flows out of 2 lateal luschka foramen into the median aperature
  5. CSF fills the subarchnoid space and bathes external surface of brain and spinal cord
  6. At arachnoid villa the CSF is reabsorbed into the venous blood of dural venous sinuses
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12
Q

pontine cistern is _____ to the pons

location

A

ventral

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13
Q

pontine cistern accommodates these structures

A

basilar artery, CN 6 (LR), CN VII (facial), CN VIII (vestibulocochlear)

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14
Q

interpeduncular cistern accomodates for

A

CN III
MAmmillary bodies
Circle of willis

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15
Q

location of interpedunclar cistern

A

over the interpeduncular fossa

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16
Q

mamillary bodies are responsible for

A

relaying stations in the olfactory pathway and are involved in the emotional response to odors

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17
Q

interpeduncular cistern connect ___ ___ with the pontine cistern

A

pontine cistern

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18
Q

which CN lies in front of the interpeduncular cistern?

A

3

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19
Q

CN 3 functions

A

miosis, contraction of the ciliary muscles to relax and round the lens (parasympathetic),
prevention of ptosis, visual tracking and gaze (4 mm.),

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20
Q

4 mm. innervated by CN 3

A

superior rectus, medial rectus, inferior rectus, inferior oblique

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21
Q

chiasmatic cistern accommodates the

A

optic chiasm

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22
Q

superior cistern AKA

A

quadrigeminal cistern or great cerebral vein of galen

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23
Q

quadrigeminal cistern is located above which brain structure

A

above the cerebellum

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24
Q

cistern of great cerebral vein of galen accommodates for

A

great cerebral vein of Galen
posterior cerebral arteries
superior cerebellar arteries
pineal gland

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25
Q

Pineal gland secretes

A

melatonin, FSH, LH,

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26
Q

FSH and LH is released by what portion of the pituitary gland?

A

anterior

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27
Q

How does CSF protect the CNS?

A

cushion for the brain to float and not have full weight on the internal aspect of the skull

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28
Q

other functions of CSF

A 
nutrition
&
removes neural waste products
& 
regulates intracranial pressure
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29
Q

which gland is located in the superior cistern?

A

pineal gland

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30
Q

Ependymal cells (cuboidal) produce what?

A

CSF

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31
Q

There is how many mL of CSF in the system at one time?

A

125

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32
Q

25 mL of CSF is found in the

A

ventricles

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33
Q

100 mL is found in the

A

subarachnoid space

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34
Q

which structures function to return CSF to the venous circulation for drainage/absorption?

A

arachnoid granulations

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35
Q

onewayvalves

arachnoid granulations push through

A

MENINGEAL dura mater > mainly Toward the superior sagittal sinus

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36
Q

ependymal cells help circulate what?

A

CSF

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37
Q

folic acid is important for what?

A

preventing neural tube defects

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38
Q

lumen of the neural tube gives rise to

A

ventricles

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39
Q

primary ventricles shape

A

cylinder

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40
Q

secondary ventricles are formed as the _____ ____ changes during ______.

A

neural tube & development

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41
Q

largest of the ventricles are the _____ ventricles and are ___ shaped

A

lateral

C

42
Q

Lateral ventricles produce what % of CSF

A

80-90

43
Q

lateral ventricles are located in ___ major brain lobes

A

4

44
Q

5 parts of the lateral ventricles

A 
anterior horn
body
trigone
posterior head
inferior head
45
Q

anterior horn of LV located in

A

frontal lobe

46
Q

anterior horn of LV is rostral to 2 ______ of ______

A

foramen of monro

47
Q

septum pellucidum is the

A

medial wall of the anterior horn of LV

48
Q

lateral wall of the anterior horn of the lateral ventricle is the

A

head of the caudate nucleus

49
Q

caudate nucleus is part of the

A

basal ganglia

50
Q

corpus callosum is composed of

A

subcomponents of the basal ganglia: caudate nucleus and lentiform nuclei

51
Q

goal directed behaviors is achieved by which subcomponent of the basal ganglia

A

caudate nucleus

52
Q

what structure seperates the lateral ventricles on each side of the cerebrum

A

septum pellucidum

53
Q

largest part of the LV begins at the

A

foramen monro

54
Q

largest LV portion is the

A

body

55
Q

body Of LV is located between 2 structures

A

anterior horn & trigone of the LV

56
Q

roof of the body of LV is

A

corpus callosum

57
Q

medial wall of the LV’s body

A

thalamus and covered by septum pellucidum

58
Q

lateral wall of LV’s body is the

A

body of the caudate

59
Q

trigone/atrium of lateral ventricle contains the

A

GLomus

60
Q

what is the glomus

A

largest portions of the choroid plexus

61
Q

what two arteries anastomose in the trigone?

what do the arteries branch off of?

A

anterior and posterior choroidal arteries anastomose here

they are both branches of the ICA and vertebrobasilar artery

62
Q

the trigone also contains a site of anastamosis between which other 2 systems?

A

supra and infra tentorial

63
Q

dead end space of the ventricular system

A

posterior horn of lateral ventricles

64
Q

floor & medial wall of the inferior temporal horn of LV

A

hippocampus

65
Q

the roof of the temporal horn of LV is the

A

tail of the caudate

66
Q

lesion of the hippocampus will result in

A

anterograde amnesia

can only remember things of the past

67
Q

these two structures work together to link

A

emotional context to memories

alzhiemers targets this area

68
Q

which structure connects 2 lateral ventricles to the 3rd ventricle

A

interventricular foramen (foramen monro)

69
Q

what transverses the 3rd vetnricle?

A

interthalamic adhesions

70
Q

3rd ventricle lies between

A

both thalmi in the diencephalon

71
Q

the 4 recesses of the 3rd ventricle

A

optic/chiasmatic
infundibular
pineal
suprapineal

72
Q

infundibular houses the

A

posterior lobe of the pituitary gland

73
Q

the pineal recess houses the

A

pineal gland

74
Q

the suprarenal recess contains a

A

diverticulum of the roof of the 3rd ventricle

75
Q

what is the narrowest part of the ventricular system?

A

cerebral aqueduct aka aqueduct of sylvius

76
Q

where is the common site of blockage in the ventricular system

A

aqueduct of sylvius

77
Q

which passageway connects the 3rd & 4th ventricles?

A

cerebral aqueduct

78
Q

4th ventricle location to pons and medulla is

A

dorsal

79
Q

4th ventricle location to the medulla

A

is ventral

80
Q

floor of the 4th ventricle is known as the

A

rhomboid fossa

81
Q

the bottom portion of the 4th ventricle enters the

A

central canal of the spinal cord

82
Q

the lateral recesses/arms of the rhomboid of the 4th ventricle end at the

A

foramina of luschka

83
Q

the middle line of the 4th ventricle is the

A

median aperture

84
Q

Obex is the

A

caudal tip of the 4th ventricle

85
Q

what is the superior opening of the 4th ventricle

A

cerebral aqueduct

86
Q

blockage of the CSF pathway will affect which structures

A

behind the occlusion

87
Q

what is the main CSF return pathway

A

superior sagittal sinus

88
Q

the main drain point of CSF is the

A

internal jugular vein

89
Q

hydrocephalus can be caused by

A

overproduction of CSF OR blockage of CSF

90
Q

blockage of what structures will cause hydrocephalus

A

cerebral aqueduct and the apertures of the 4th ventricle

91
Q

CSF is continuously produced T/f?

A

T

92
Q

how would hydrocephalus be treated?

A

shunt

93
Q

if tumor was in foramen of monro what would be affected?

A

LV > enlarged

94
Q

Choroid plexus is located ONLY in which portions of the LATERAL ventricle

A

body, atrium, and inferior horn only

95
Q

BODY of lateral ventricle

choroid plexus is formed by

A

anterior choroidal branches of the ICA

96
Q

the atrium/trigone choroid plexus is formed by the

A

glomus = anterior and posterior choroidal arteries

97
Q

In the inferior horn the choroid plexus is formed by the

A

posterior choroidal branchs of the Posterior cerebral artery

98
Q

choroid plexus of the 3rd ventricle is located in the

A

roof

99
Q

what artery directly generates choroid plexus in the roof of the 3rd venricle

A

posterior choroidal branches of the PCA

100
Q

choroid plexus of the 4th ventricle is located in

A

caudal part of the roof

101
Q

what artery directly generates choroid plexus in the caudal part of the roof of the 4th ventricle

A

posterior inferior cerebellar artery of the vertebral artery

trisemester 3 TCC (25 decks)

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