Meninges and Venous Drainage

Question 1

Name 2 types of dura mater

Answer 1

Cranial & Spinal

Question 2

Describe cranial dura mater

Answer 2

Double- periosteal & meningeal (dura mater proper)

Question 3

Describe spinal dura mater

Answer 3

Single- meningeal

Question 4

Describe the arachnoid mater

Answer 4

Transparent

Subarachnoidal space

Question 5

Describe the Pia Mater

Answer 5

Follows contours & highly vascular

Question 6

Name the 3 layers of the meninges

Answer 6

Dura Mater
Pia Mater
Arachnoid Mater

Question 7

List the folds (partitions) of the dura

Answer 7

Falx cerebri
Falx cerebelli
Tentorium cerebelli
Diaphragma sellae

Question 8

List the vertical folds of the dura

Answer 8

Falx cerebri

Falx cerebelli

Question 9

List the horizontal folds of the dura

Answer 9

Tentorium cerebelli

Diaphragma sellae

Question 10

What is the role of the dura partitions?

Answer 10

To restrict rotary displacement of the brain

Question 11

Describe the anterior attachment of the Falx Cerebri

Answer 11

Attached to the frontal crest & superior sagittal sulcus

Question 12

Describe the posterior attachment of the Falx Cerebri

Answer 12

Attached to the internal occipital protuberance

Question 13

What shape is the Falx Cerebri?

Answer 13

Sickle Shaped

Question 14

What is the posterior part of the Falx Cerebri attached to and what does it lie between?

Answer 14

Attached to the horizontal tentorium cerebelli. It lies between the two cerebral hemispheres

Question 15

Where is the superior sagittal sinus located?

Answer 15

Upper margin/border of the falx cerebri

Question 16

Describe blood flow in the superior sagittal sinus

Answer 16

Flow towards the confluence of sinuses and then into the right transverse sinus

Question 17

Where is the inferior sagittal sinus located?

Answer 17

Within the lower margin/border of the falx cerebri

Question 18

Describe blood flow in the inferior sagittal sinus

Answer 18

Flow into the straight sinus, into the confluence of sinuses and then into the left transverse sinus

Question 19

Where does blood from the right & left transverse sinuses enter?

Answer 19

Right and the left sigmoid sinuses

Question 20

What is the jugular vein composed of? Where is it located?

Answer 20

• Right & Left Sigmoid sinuses

- Jugular Foramen

Question 21

What does the Tentorium cerebelli separate?

Answer 21

Cerebral hemispheres above from cerebellum below

Question 22

Describe the posterior attachment of the Tentorium cerebelli

Answer 22

Attached to the Internal occipital protuberance , the margins of transverse sulcus, margins of superior petrosal sulcus and ends at posterior clinoid process

Question 23

Describe the anterior attachment of the Tentorium cerebelli

Answer 23

Free edge is attached to anterior clinoid process

Question 24

What is the pituitary gland covered by?

Answer 24

Diaphragm sellae

Question 25

Where is the Pituary Gland diaphragm sellae located?

Answer 25

Between the anterior and the posterior clinoid processes of sella turcica & roofs the pituitary fossa

Question 26

Where does the cavernous sinus lie?

Answer 26

On the side of the sella turcica

Question 27

Describe the blood supply of the cavernous sinus

Answer 27

Receives blood from the superior and inferior opthalmic veins of the orbit, cerebral veins draining the brain and the sphenoparietal sinus which runs under the lesser wing of sphenoid

Question 28

Describe how the cavernous sinus is drained

Answer 28

Drained by the superior and inferior petrosal sinuses

Question 29

What vertebrae has no body?

Answer 29

C1

Question 30

Why does C1 vertebrae have no body?

Answer 30

During embryological life the body detatches from Atlas and joins to Axis