Meninges

Question 1

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

Answer 1

False.

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

Question 2

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

Answer 2

False.

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

Question 3

What are the meninges of the brain?

Answer 3

Dura mater, arachnoid mater, pia mater

Question 4

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

Answer 4

True

Question 5

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

Answer 5

Pia mater

Question 6

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

Answer 6

Epidural space/ extradural space/ dura-cranial interaface &

Subdural space/dura-arachnoid junction

Question 7

Which is a real space between the meninges?

Answer 7

Subarachnoid space/arachnoid-pia interface

Question 8

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

Answer 8

Subdural space/dura-arachnoid junction

Question 9

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

Answer 9

Epidural space/ extradural space/ dura-arachnoid interface

Question 10

Which is the space between the arachnoid and pia mater?

Answer 10

Subarachnoid space/arachnoid-pia interface

Question 11

What fluid fills the subarachnoid space?

Answer 11

CSF

Question 12

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

Answer 12

Arachnoid villi

Question 13

What are arachnoid granules?

Answer 13

Aggregations of arachnoid villi

Question 14

What are the two layers of the dura?

Answer 14

Periosteal layer/ endosteal layer &

Meningeal layer

Question 15

What is the falx cerebri?

Answer 15

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

Question 16

What does the falx cerebelli separate?

Answer 16

Cerebellar hemisphere

Question 17

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

Answer 17

Tentorium cerebelli

Question 18

The tentorium cerebelli divides the cranial cavity into which compartments?

Answer 18

Supratentorial compartment, infratentorial compartment

Question 19

Which is the smallest dural reflection?

Answer 19

Diaphragma sella

Question 20

Which is the largest dural reflection?

Answer 20

Falx cerebri

Question 21

What structure does the diaphragma sella roof over?

Answer 21

Sella turcia

Question 22

Which layer forms the dural reflections?

Answer 22

Meningeal layer

Question 23

Where does the falx cerebri attach to anteriorly?

Answer 23

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

Question 24

Where does the falx cerabri attach to posteriorly?

Answer 24

Internal occipital protruberance

Question 25

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

Answer 25

True.

Question 26

The tentorium cerebelli attaches to which structure rostolaterally?

Answer 26

Petrous portion of the temporal bone

Question 27

Tentorium berebelli attaches to which structure rostrally?

Answer 27

Clinoid process of the sphenoid

Question 28

The tentorium cerebelli attaches to which structure posterolaterally?

Answer 28

Occipital and parietal bones

Question 29

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

Answer 29

Tentorial notch

Question 30

What are the leptomeninges?

Answer 30

Arachnoid mater, pia mater

Question 31

What are pachymeninges?

Answer 31

Dura mater, arachnoid mater

Question 32

Supratentorial structures except: a. superior colliculus b. thalamus c. lateral geniculate body d. medial geniculate body

Answer 32

A

Question 33

Which layer is intimately related to the brain parenchyma a. outer dura b. inner dura c. arachnoid d. pia mater

Answer 33

D