Vascular Anatomy of the Brain

Question 0

Anterior Circulation

Answer 0

Supplies the cerebral hemispheres

Question 1

Cerebral Arteries

Answer 1

Anterior circulation - Internal Carotid Artery

Posterior circulation - Basilar Artery

Question 2

T or F

ICA pass through the foramen lacerum

Answer 2

False

Pass above/over

Question 3

Opthalmic Artery

Answer 3

In 15 or 50% of population, it arises from the cavernous sinus..not always supraclinoid

Question 4

Terminal ICA’s branches

Answer 4

Posterior communicating artery

Anterior choroidal artery

Question 5

ICA’s path

Answer 5

Cervical
Petrous
Lacerum
Cavernous
Clinoid
Supraclinoid (Opthalmic)
Terminal (2 branches)

Question 6

True or False

When the opthalmic artery is lacerated, the patient will go blind

Answer 6

False
There are other arteries which supply blood to the eyes
Anatomosis of vessels

Question 7

Impact of small arteries are great!!!

Answer 7

Small artery stroke similar to big artery stroke

Question 8

Middle cerebral artery

Answer 8

Supplies majority of the part in one hemisphere

Supply the occipital lobe (not only posterior cerebral artery)

Question 9

Signals the terminus of the ICA

Answer 9

Know!

Question 10

Posterior circulation

Answer 10

During development, it develops earlier

Question 11

Vertebral artery

Answer 11

Supplies the whole brain

Arises from the subclavian artery

Question 12

Know!

Answer 12

Walenberg’s syndrome

Question 13

ARAS

Answer 13

Supplied by perforating arteries

Starts from rostral pons to diencephalon

Question 14

Circle of Willis

Answer 14

Whole circle is only present in 20-25%

Question 15

Aneurysms

Answer 15

Common in Anterior Cerebral Artery
85% will happen in anterior circulation
15% happens in posterior circulation

Question 16

Largest venous sinus

Runs smooth in the midline along the falx cerebri and extends posteriorly to the torcula of Herophili

Answer 16

Superior sagittal sinus

Question 17

Center of gravity of the brain

Answer 17

Pineal region

Question 18

Dominant venous drainage

Answer 18

Right transverse vein

Question 19

Lacerated ICA

Answer 19

Build-up of pressure in cavernous sinus

Results to pulsating face, red face and red eye because the veins are engorged and won’t drain