Meninges

Question 1

Function of meninges

Answer 1

to stabilize and protect brain and SC

Question 2

The meninges suspends the ___ from the ___.

Answer 2

brain from skull

Question 3

The meninges cushion the brain with ___.

Answer 3

CSF

Question 4

3 layers of meninges

Answer 4

dura matter, arachnoid, pia matter

Question 5

2 layers of dura matter

Answer 5

periosteal (lines inner surface of skull)

meningeal (faces inward)

Question 6

2 potential spaces in dura matter

Answer 6

epidural

subdural

Question 7

Name 2 dural reflection

Answer 7

Falx cerebri

Tentorum cerebri

Question 8

The falx cerebri (dural reflection) occupies the ___ fissure and separates the _____hemispheres

Answer 8

occupies longitudinal fissure

separates cerebral hemispheres

Question 9

Falx cerebri attaches anteriorly to ______ and posteriorly to _______/

Answer 9

anteriorly to crista galli

posteriorly to tentorum cerebelli

Question 10

Tentorum cerevelli separates cerebellum from _____ lobes, making these two compartments:

Answer 10

occipital lobes

supratentorial and infratentorial compartments

Question 11

Tentorum cerebelli attaches posteriorly to ____ bone and continues to petrous portion of ___ bone.

Answer 11

occipital bone to petrous portion of temporal bone

Question 12

The ______ is the space in the tentorium cerebelli through which the brainstem passes.

Answer 12

tentorial notch

Question 13

The falx cerebri and tentorial notch have firm edges, so brain tissue under pressure may ____ under or around these structures.

Answer 13

herniate

Question 14

Do the dural sinuses have valves?

Answer 14

no

Question 15

Name the space between arachnoid and pia. This space contains ____.

Answer 15

subarachnoid space. contains CSF

Question 16

Protrusions of arachnoid into superior sagittal sinus are called ______.

Answer 16

arachnoid villi

Question 17

Arachnoi villi act as (1 or 2) way valves for CSF

Answer 17

1

Question 18

Pressure gradient favors flow of CSF from subarachnoid space into _____.

Answer 18

subarachnoid space –> sinuses

Question 19

T/F

Cerebral arteries run in subarachnoid space

Answer 19

true

Question 20

___ creates a barrier between CSF and brain.

Answer 20

Pia matter

Question 21

bleeding from a torn meningeal artery making the potential epidural space a real one:

Answer 21

epidural hematoma

Question 22

Epidural hematomas usuall have (good or poor) prognoses.

Answer 22

poor

Question 23

Epidural hematomas are ___ shaped on imaging.

Answer 23

Lens

Question 24

Tearing of a cerebral vein as it enters sinus can result in _____. __ shaped on imaging.

Answer 24

subdural hematoma

sickle-shaped

Question 25

Bleeding of arteries into subarachnoid space is known as ______. This is the most common type of hemorrhage.

Answer 25

subarachnoid hemorrhage

Question 26

2 scales used to rate subarachnoid hemorrhages:

What are they based on?

Answer 26

Hunt and Hess: neuro exam/behavior

Fisher: thickness of layer of blood