Brain Development and Meninges

Question 1

Structures Derived from the Prosencephalon

Answer 1

Cerebral Hemispheres (Telencephalon)
Diencephalon

Question 2

Structures derived from the Mesencephalon

Answer 2

Midbrain

Question 3

Structures Derived from the Rhombencephalon

Answer 3

Metencephalon (Pons and Cerebellum)

Myelencephalon (Medulla Oblongata)

Question 4

Functions of the Meninges

Answer 4

Physical protection of the CNS
Providing a space for flow of CSF
Carrying blood supply to and from the head

Question 5

Structure of Dura Mater

Answer 5

Tough, Fibrous

Divided into Outer PERI-OSTEAL and Inner MENINGEAL layers

Question 6

Structure of Arachnoid Mater

Answer 6

Thin, Avascular

Arachnoid Granulations/Villi allow movement of CSF into venous system

Question 7

Structure of Pia Mater

Answer 7

Thin, Delicate

Tightly adhered to the brain surface

Question 8

Which space contains CSF

Answer 8

Subarachnoid Space (between Arachnoid and Pia Mater)

Question 9

Innervation of the Meninges

Answer 9

Branches of CN V3 (Trigeminal Mandibular)

Question 10

Which dural projection separates the two cerebral hemispheres?

Answer 10

Falx Cerebri

Question 11

Which dural projection separates the cerebellum from the cerebral hemispheres?

Answer 11

Tentorium Cerebelli

Question 12

Which structure separates the cerebellar hemispheres?

Answer 12

Falx Cerebelli

Question 13

What is the Diaphragma Sellae

Answer 13

Covers the Hypophysial Fossa in the sella turcica of the Sphenoid bone

Question 14

Main dural sinuses?

Answer 14

Superior and Inferior Sagittal Sinuses

Question 15

Other dural sinuses?

Answer 15

Transverse sinuses
Straight Sinus (falx cerebri/tentorium cerebelli)
Confluence of Sinuses

Question 16

Where do the cerebral veins and superior sagittal sinus ultimately drain into?

Answer 16

Confluence of Sinuses

Question 17

Where does the confluence of sinuses drain into?

Answer 17

Transverse Sinus

Question 18

Where does the transverse sinus drain into?

Answer 18

Sigmoid sinus

Question 19

Where does the Sigmoid sinus drain into?

Answer 19

Internal Jugular Vein