ventricles,meninges, CNS blood supply

Question 1

cerebral aquaduct is in the

Answer 1

midbrain

Question 2

rhombencephalon becomes the

Answer 2

cerebellum, pons, and myelencephalon/medulla

Question 3

Horns of the lateral ventricle

Answer 3

frontal/anterior, occipital/posterior, temporal/inferior

Question 4

glomus is in the ___ of the lateral ventricle. It makes ____. A pathology is ___

Answer 4

atrium/trigone; CSF (its choroid plexus that can become calcified)

Question 5

the 3 foramen are on what part of the 4th ventricle?

Answer 5

two on the lateral sides, on on the dorsal side midline

Question 6

body is between what two horns?

Answer 6

anterior/frontal and posterior/occipital

Question 7

The third ventricle is in an area that has….

Answer 7

like 20 different nuclei that you can’t see. good luck with that.

Question 8

what is “the egg”

Answer 8

thalamus

Question 9

below “the egg” is the?

Answer 9

hypothalamus

Question 10

foramen of Monro is btn?

Answer 10

lateral ventricle and third ventricle

Question 11

choiroid plexus is made of? it makes?

Answer 11

ependymal cells that line the neural tube. they capture choroidal arteries (blood vessels) and make CSF

Question 12

choroid epithelial cells

Answer 12

have tight junctions and provide a blood/csf barrier. these cells are different from the ependymal cells

Question 13

caudate nucleus location

Answer 13

its big and is lateral to the lateral ventricle, the tail is next to the hippocampal formation and a choroid plexus

Question 14

little dude can swim around the ____ in the third ventricle

Answer 14

masa intermedia

Question 15

where do choroidal arteries come from

Answer 15

lotsa places. most directly, the anterior and posterior choroidal arteries. these come off of the anterior and posterior blood supply to the brain

Question 16

eventually, what blood vessels should you know

Answer 16

if he names a choroidal plexus, name the arteries that it gets blood from. yaaaaaay.

Question 17

CN3 sits between what vessels

Answer 17

Post Cerebral a. and the superior cerebellar a.

Question 18

lamina terminalis

Answer 18

original closure of anterior neural tube

Question 19

hypothalamus, think__

Answer 19

ANS

Question 20

CN12 between

Answer 20

the olives and the pyramids

Question 21

obex

Answer 21

the area where the medulla closes

Question 22

ependymoma

Answer 22

usually in posterior fossa; tumor of ependymal cells

Question 23

layers of BBB from blood vessel to brain

Answer 23

i need to type faster, and you need to look it up

Question 24

obstructive hydrocephalus

Answer 24

CSF flow is blocked

Question 25

communicating hydrocephalus

Answer 25

CSF isn't absorbed in the arachnoid granulations, but its still being made

Question 26

normal-pressure hydrocephalus

Answer 26

incontinance, dimentia, gait problems THIS IS A BOARD QUESTION!!!!!

Question 27

ex vacuo

Answer 27

excess csf where brain tissue has atrophied (like after a stroke)

Question 28

don't forget about what neural tube defect

Answer 28

spina bifida and "tufts of back hair"

Question 29

meninges are from

Answer 29

neural crest and mesenchymyal tissue

Question 30

initial two layers of meninges

Answer 30

ectomeninex that becomes dura; endomeninex becomes the pia that splits into pia and arachnoid

Question 31

leptomeninges

Answer 31

a term for pia and arachnoid

Question 32

subdural hematoma

Answer 32

bleeds in the subdural space; from BRIDGING veins

Question 33

tentorial notch

Answer 33

MIDBRAIN! CN3 can bet pinched in the interpeduncular fossa; they can't constrict pupil

Question 34

cistern definition and importance

Answer 34

enlargements of the SAS where the dura and the arachnoid don't exactly follow the curveatures of the brain; if you have an aneurism, then you will see a bright white blood spot on a CT. its important to know these, so you can locate a bleed

Question 35

cisterna magna locale

Answer 35

near the foramen magnum on posterior aspect of brain

Question 36

prepontine cistern locale

Answer 36

in front of pons

Question 37

interpeduncular cistern locale

Answer 37

in front of peduncles

Question 38

ambient cistern locale

Answer 38

surrounding the midbrain

Question 39

meningioma locale

Answer 39

anywhere you have meninges. these are usually more benign, but they give you a "mass effect"

Question 40

epidural hematoma shape, cause

Answer 40

lens shaped because they are confined between sutures; give a "mass effect"

Question 41

subdural hematomas shape

Answer 41

long and narrow

Question 42

subarachnoid hemmorrhage

Answer 42

you get blood in the cisterns that looks like bright white blood outlining the borders of the brain

Question 43

papilledema

Answer 43

from high intercranial pressure; it pushes back of the eye and makes the optic disk bulge

Question 44

central herniation

Answer 44

pressure that pushes base of cerebral strxs down

Question 45

uncal herniation

Answer 45

uncus goes down between the tentorium; get problems with CN3 getting pinched

Question 46

tonsillar herniation

Answer 46

pressure that makes the cerebellum into the foramen magnum; the medulla is in there and it controls your really important things like breathing and heart function

Question 47

"blown" pupil

Answer 47

IPSILATERAL unresponsive pupil because there is a problem with CN3; usually you worry about

Question 48

alternating hemiplegia from what nerves?

Answer 48

CN3, CN6, CN12 STEREOTYPE STATEWIDE QUESTION

Question 49

two blood supplies to the brain

Answer 49

internal carotid a, vertebral a

Question 50

above C1 what happens to the vertebral artery

Answer 50

it passes across the top of C1 and joins together at the ponto-medullary border to become the basilar artery.

Question 51

nerve @ pontomedullary junction

Answer 51

abducens

Question 52

PICA

Answer 52

posterior inf. cerebellar artery that comes off the vertebral arteries before the pontomedullary junction. it supplies blood to the cerebellum

Question 53

AICA

Answer 53

at the pontomedullary junction that runs posteriorly

Question 54

CN3 between what two arteries

Answer 54

PCA and SCA

Question 55

aneurysms usually occur

Answer 55

at branch points of the anterior circulation

Question 56

what do you HAVE to know

Answer 56

the areas and symptoms that occur if there is a vascular event affecting the brain.

Question 57

what other things do you need to know

Answer 57

things like: the medulla has CNs VI to XII; where every single decussation is. oh goody.

Question 58

lenticulostriate branches to

Answer 58

internal capsule, thalamus, putamen, claustrum, globus pallidus, caudate nucleus

Question 59

what does hemianopia mean

Answer 59

half of the visual field is lost

Question 60

watershed zones

Answer 60

areas of the brain between two territories of vessels; if you get a lesion, this area will not get perfused. There isn't really any collateral circulation in the brain.

Question 61

area postrema

Answer 61

if you get something in the vasculature that the brain thinks is bad, this area triggers vomiting.