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

Neuro test 1 PWP Cisterns & CSF Flashcards by Alex Robertson

how many major cisterns does the brain have

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where are cisterns located

subarachnoid space

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cisterns hold

CSF

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cerebellomedullary cistern is also known as

cistern magna

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Largest cranial cistern is the

cistern magna

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cerebellomedullary cistern is ______ to the brainstem

dorsal

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which ventricle drain into the cisterna magna?

4th ventricle

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

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the 3 openings of the cerebellomedullary cistern is

2- lateral luschka

1- median madendie/median aperture

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how many foramen magendie does an adult have?

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CSF flow

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

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pontine cistern is _____ to the pons

location

ventral

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pontine cistern accommodates these structures

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

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interpeduncular cistern accomodates for

CN III
MAmmillary bodies
Circle of willis

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location of interpedunclar cistern

over the interpeduncular fossa

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mamillary bodies are responsible for

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

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interpeduncular cistern connect ___ ___ with the pontine cistern

pontine cistern

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which CN lies in front of the interpeduncular cistern?

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CN 3 functions

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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4 mm. innervated by CN 3

superior rectus, medial rectus, inferior rectus, inferior oblique

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chiasmatic cistern accommodates the

optic chiasm

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superior cistern AKA

quadrigeminal cistern or great cerebral vein of galen

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quadrigeminal cistern is located above which brain structure

above the cerebellum

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cistern of great cerebral vein of galen accommodates for

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

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Pineal gland secretes

melatonin, FSH, LH,

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

How does CSF protect the CNS?

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

other functions of CSF

``` nutrition & removes neural waste products & regulates intracranial pressure ```

which gland is located in the superior cistern?

pineal gland

Ependymal cells (cuboidal) produce what?

CSF

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

125

25 mL of CSF is found in the

ventricles

100 mL is found in the

subarachnoid space

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

arachnoid granulations

arachnoid granulations push through #onewayvalves

MENINGEAL dura mater > mainly Toward the superior sagittal sinus

ependymal cells help circulate what?

CSF

folic acid is important for what?

preventing neural tube defects

lumen of the neural tube gives rise to

ventricles

primary ventricles shape

cylinder

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

neural tube & development

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

lateral C

Lateral ventricles produce what % of CSF

80-90

lateral ventricles are located in ___ major brain lobes

5 parts of the lateral ventricles

``` anterior horn body trigone posterior head inferior head ```

anterior horn of LV located in

frontal lobe

anterior horn of LV is rostral to 2 ______ of ______

foramen of monro

septum pellucidum is the

medial wall of the anterior horn of LV

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

head of the caudate nucleus

caudate nucleus is part of the

basal ganglia

corpus callosum is composed of

subcomponents of the basal ganglia: caudate nucleus and lentiform nuclei

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

caudate nucleus

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

septum pellucidum

largest part of the LV begins at the

foramen monro

largest LV portion is the

body

body Of LV is located between 2 structures

anterior horn & trigone of the LV

roof of the body of LV is

corpus callosum

medial wall of the LV's body

thalamus and covered by septum pellucidum

lateral wall of LV's body is the

body of the caudate

trigone/atrium of lateral ventricle contains the

GLomus

what is the glomus

largest portions of the choroid plexus

what two arteries anastomose in the trigone? | what do the arteries branch off of?

anterior and posterior choroidal arteries anastomose here | they are both branches of the ICA and vertebrobasilar artery

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

supra and infra tentorial

dead end space of the ventricular system

posterior horn of lateral ventricles

floor & medial wall of the inferior temporal horn of LV

hippocampus

the roof of the temporal horn of LV is the

tail of the caudate

lesion of the hippocampus will result in

anterograde amnesia | can only remember things of the past

these two structures work together to link

emotional context to memories | alzhiemers targets this area

which structure connects 2 lateral ventricles to the 3rd ventricle

interventricular foramen (foramen monro)

what transverses the 3rd vetnricle?

interthalamic adhesions

3rd ventricle lies between

both thalmi in the diencephalon

the 4 recesses of the 3rd ventricle

optic/chiasmatic infundibular pineal suprapineal

infundibular houses the

posterior lobe of the pituitary gland

the pineal recess houses the

pineal gland

the suprarenal recess contains a

diverticulum of the roof of the 3rd ventricle

what is the narrowest part of the ventricular system?

cerebral aqueduct aka aqueduct of sylvius

where is the common site of blockage in the ventricular system

aqueduct of sylvius

which passageway connects the 3rd & 4th ventricles?

cerebral aqueduct

4th ventricle location to pons and medulla is

dorsal

4th ventricle location to the medulla

is ventral

floor of the 4th ventricle is known as the

rhomboid fossa

the bottom portion of the 4th ventricle enters the

central canal of the spinal cord

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

foramina of luschka

the middle line of the 4th ventricle is the

median aperture

Obex is the

caudal tip of the 4th ventricle

what is the superior opening of the 4th ventricle

cerebral aqueduct

blockage of the CSF pathway will affect which structures

behind the occlusion

what is the main CSF return pathway

superior sagittal sinus

the main drain point of CSF is the

internal jugular vein

hydrocephalus can be caused by

overproduction of CSF OR blockage of CSF

blockage of what structures will cause hydrocephalus

cerebral aqueduct and the apertures of the 4th ventricle

CSF is continuously produced T/f?

how would hydrocephalus be treated?

shunt

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

LV > enlarged

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

body, atrium, and inferior horn only

BODY of lateral ventricle | choroid plexus is formed by

anterior choroidal branches of the ICA

the atrium/trigone choroid plexus is formed by the

glomus = anterior and posterior choroidal arteries

In the inferior horn the choroid plexus is formed by the

posterior choroidal branchs of the Posterior cerebral artery

choroid plexus of the 3rd ventricle is located in the

roof

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

posterior choroidal branches of the PCA

choroid plexus of the 4th ventricle is located in

caudal part of the roof

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

posterior inferior cerebellar artery of the vertebral artery