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Flashcards in Meninges Deck (33):
1

The external periosteal layer of the dura is continuous with the dura mater of the spinal cord. True or false? If false, explain.

False.

The dura of the spinal cord is continuous only with the meningeal layer of the dura covering the brain.

2

In the craniual base, the two dural layers can be easily separated from the bones. True or false? If false, explain.

False.

The dura is firmly attached to the cranial base and is difficult to separate from the bones.

3

What are the meninges of the brain?

Dura mater, arachnoid mater, pia mater

4

The arachnoid is avascular. True or false? If false, explain.

True

5

Which meninge adheres closely to the brain, following its folds?

Pia mater

6

Which are potential spaces inside the normal skull between the meninges?

Epidural space/ extradural space/ dura-cranial interaface &
Subdural space/dura-arachnoid junction

7

Which is a real space between the meninges?

Subarachnoid space/arachnoid-pia interface

8

Which is the potential space located between the dura mater and arachnoid?

Subdural space/dura-arachnoid junction

9

Which is the potential space between the cranium and the dura?

Epidural space/ extradural space/ dura-arachnoid interface

10

Which is the space between the arachnoid and pia mater?

Subarachnoid space/arachnoid-pia interface

11

What fluid fills the subarachnoid space?

CSF

12

Which structures are the sited of diffusion of CSF into the blood stream?

Arachnoid villi

13

What are arachnoid granules?

Aggregations of arachnoid villi

14

What are the two layers of the dura?

Periosteal layer/ endosteal layer &
Meningeal layer

15

What is the falx cerebri?

The dural infolding found in the longitudinal fissure, separating the right and left hemisphere

16

What does the falx cerebelli separate?

Cerebellar hemisphere

17

Which dural reflection separates the occipital lobes of the cerebral cortex and the cerebellum?

Tentorium cerebelli

18

The tentorium cerebelli divides the cranial cavity into which compartments?

Supratentorial compartment, infratentorial compartment

19

Which is the smallest dural reflection?

Diaphragma sella

20

Which is the largest dural reflection?

Falx cerebri

21

What structure does the diaphragma sella roof over?

Sella turcia

22

Which layer forms the dural reflections?

Meningeal layer

23

Where does the falx cerebri attach to anteriorly?

Frontal crest of the frontal bone, crista galli of ethmoid bone

24

Where does the falx cerabri attach to posteriorly?

Internal occipital protruberance

25

The falx cerabri is continous with the tentorium cerebelli. True or false? If false, explain.

True.

26

The tentorium cerebelli attaches to which structure rostolaterally?

Petrous portion of the temporal bone

27

Tentorium berebelli attaches to which structure rostrally?

Clinoid process of the sphenoid

28

The tentorium cerebelli attaches to which structure posterolaterally?

Occipital and parietal bones

29

Through which structure of the tentorium cerebelli does the midbrain pass?

Tentorial notch

30

What are the leptomeninges?

Arachnoid mater, pia mater

31

What are pachymeninges?

Dura mater, arachnoid mater

32

Supratentorial structures except:

a. superior colliculus
b. thalamus
c. lateral geniculate body
d. medial geniculate body

A

33

Which layer is intimately related to the brain parenchyma

a. outer dura
b. inner dura
c. arachnoid
d. pia mater

D