Vascular System Wk2

Question 1

What does the internal carotid artery pass through in the skull?

Answer 1

Passes through carotid canal
in temporal bone

Question 2

What do the vertebral arteries pass through?

Answer 2

• Transverse foramina of C6 - C1
• Pass through foramen
  magnum from subclavian art.
• Join to form the basilar artery

Question 3

What are the 4 divisions of the internal carotid artery?

Answer 3

Cervical, petrous, Cavernous and cerebral

Question 4

Cervical part

Answer 4

Located in the lateral pharyngeal space

Question 5

Petrous part

Answer 5

(2) Petrous part: within carotid canal of petrous part of temporal bone

Question 6

Cavernous part

Answer 6

(3) Cavernous part: S-shaped bend within cavernous sinus

Question 7

Cerebral Part

Answer 7

(4) Cerebral part: within the chiasmatic cistern of subarachnoid space

Question 8

Incoming blood from COW is

Answer 8

internal carotid arteries and vertebral arteries

Question 9

Outcoming blood from COW is

Answer 9

Anterior cerebral, Middle cerebral and posterior cerebral arteries

Question 10

Communicating arties from COW are

Answer 10

basilar artery, anterior and posterior communicating arteries

Question 11

What is the blood supply to brainstem?

Answer 11

Basilar artery: Primarily vertebral aa
Pontine arteries
Cerebellar aa: SCA = most rostral
AICA = most caudal; PICA = from vertebral aa

Question 12

Cavernous Sinus is paired and is associated with

Answer 12

• internal carotid art
• CN III (oculomotor)
• CN IV (trochlear)
• CN V1 and CN V2 (trigeminal)
• CN VI (abducens)

Question 13

Caverns forms with the

Answer 13

invagination of dura and the Alignment with dural partitions

Question 14

Outer periosteal layer follows

Answer 14

Bone

Question 15

Inner meningeal layer forms partitions

Answer 15

Partitions

Question 16

How is CSF collected in the veinous drainage system?

Answer 16

Collect CSF drained from arachnoid mater
* Direct passage via cerebral veins
* Slow diffusion through arachnoid granulations