Trans - Meninges and CSF Pathways

Question 1

meninges - define

Answer 1

connective tissue wrappings of CNS

Question 2

pachymeninges - components

Answer 2

dura and arachnoid

Question 3

Leptomeninges - components

Answer 3

pia and arachnoid

Question 4

2 layers of dura mater

Answer 4

1. outer periosteal

2. inner meningeal

Question 5

which layer of the dura has blood vessels and nerves?

Answer 5

outer periosteal

Question 6

2 potential spaces within dura

Answer 6

1. epidural space

2. subdural space

Question 7

epidural hematoma will follow the contour of what structure

Answer 7

skull

Question 8

subdural hematoma will follow the contour of what structure

Answer 8

brain

Question 9

[T/F] the subarachnoid space is an actual space

Answer 9

T

Question 10

what is contained in the subarachnoid space

Answer 10

CSF and blood vessels

Question 11

falx cerebri lies in what structure

Answer 11

median sagittal fissure

Question 12

falx cerebri - anterior attachment

Answer 12

crista galli

Question 13

falx cerebri - posterior attachment

Answer 13

tentorium cerebelli

Question 14

what separates the hemispheres of the cerebellum

Answer 14

falx cerebelli

Question 15

what separates the cerebellum from the cerebrum

Answer 15

tentorium cerebelli

Question 16

dural projection lying over sella turcia

Answer 16

diaphragma sellae

Question 17

what structure projects through the diaphragma sellae

Answer 17

infundibulum

Question 18

another name for confluence of sinuses

Answer 18

torcular Herophili

Question 19

what sinuses converge in confluence of sinuses

Answer 19

1. superior sagittal sinus
2. left transverse sinus
3. right transverse sinus
4. straight sinus

Question 20

sigmoid sinus drains into what structure

Answer 20

jugular bulb

Question 21

biggest blood vessel in dura

Answer 21

middle meningeal artery

Question 22

middle meningeal artery is a branch of:

Answer 22

internal maxillary artery (os204 yehey)

Question 23

anterior meningeal arteries are branches of:

Answer 23

opthalmic artery

Question 24

posterior meningeal arteries are branches of

Answer 24

occipital or vertebral arteries

Question 25

innervation of dura in anterior and middle cranial fossa

Answer 25

trigeminal nerve

Question 26

innervation of dura in posterior cranial fossa

Answer 26

C2/C3, vagus

Question 27

spinal dura mater forms a tube from where to where

Answer 27

foramen magnum to S2

Question 28

spinal dura mater forms which structure at the end of the spinal cord

Answer 28

coccygeal ligament

Question 29

epidural space of the spinal dura mater is largest above which vertebra

Answer 29

L2

Question 30

[T/F] spinal epidural space is a potential space

Answer 30

F

Question 31

difference of spinal and cranial epidural spaces

Answer 31

cranial epidural spaces is between periosteum and cranium spinal epidural space is between dura and periosteum

Question 32

what is the biggest cisterna

Answer 32

cisterna magna / cerebellomedullary cisterna

Question 33

where is the interpeduncular cisterna located

Answer 33

in the interpeduncular fossa

Question 34

what subarachnoid cisterna is associated with the superior and inferior colliculi

Answer 34

quadrigeminal cisterna

Question 35

what subarachnoid cisterna is associated with the thalamus

Answer 35

ambient cisterna

Question 36

function of arachnoid villi/granulations

Answer 36

absorb CSF back into venous system

Question 37

cells associated with arachnoid villi / granulations

Answer 37

leptomeningeal cells

Question 38

Virchow-Robin perivascular space - define

Answer 38

enclosed space associated with pia mater, following vessels of the brain up to the capillary level

Question 39

cuff around brain blood vessels

Answer 39

intima pia

Question 40

filum terminale anchors what structures

Answer 40

anchors conus medullaris (caudal end of spinal cord) to caudal end of spinal dural sheath

Question 41

projections of pia mater in spinal cord which go through the arachnoid to interface with the dura

Answer 41

denticulate ligaments

Question 42

ventricles are lined by what cells

Answer 42

ependymal cells

Question 43

choroid plexus - function

Answer 43

filter plasma to create CSF

Question 44

rate of creation of CSF

Answer 44

500 ml/day

Question 45

normal amount of CSF in ventricular system and subarachnoid space

Answer 45

100-160ml

Question 46

blood brain barrier - function

Answer 46

protects brain from infection

Question 47

type of junction in blood brain barrier

Answer 47

tight junction

Question 48

what substances does the blood brain barrier let pass?

Answer 48

nutrients, O2, CO2

Question 49

the blood brain barrier is not a barrier against what substances

Answer 49

1. uncharged molecules 2. lipid soluble molecules 3. nicotine and alcohol 4. some anaesthetics

Question 50

lateral ventricles follow contour of what structure

Answer 50

caudate nucleus

Question 51

parts of lateral ventricle

Answer 51

1. frontal horn 2. temporal horn 3. occipital horn 4. atrium

Question 52

another name for atrium of lateral ventricle

Answer 52

trigone

Question 53

what structure separates the left and right sides of the lateral ventricle? in what specific part of the ventricle is this found?

Answer 53

septum pellucidum in frontal horn

Question 54

how does the lateral ventricle communicate with the 3rd ventricle

Answer 54

foramen of Monro

Question 55

how does the 3rd ventricle communicate with the 4th ventricle

Answer 55

cerebral aqueduct / aqueduct of Sylvius

Question 56

structures immediately anterior to the 4th ventricle

Answer 56

pons and medulla

Question 57

structures immediately posterior to the 4th ventricle

Answer 57

cerebellum

Question 58

the 4th ventricle floor has pubs for which cranial nerves

Answer 58

7, 9

Question 59

how does the 4th ventricle communicate with the subarachnoid space

Answer 59

1. one foramen of Magendie | 2. two foramina of Luschka

Question 60

which of the 4th ventricle foramina is more lateral?

Answer 60

foramen of Luschka

Question 61

which of the 4th ventricle foramina is more medial

Answer 61

foramen of Magendie