CNS Vasculature

Question 1

What comprises the circle of Willis

Answer 1

Internal Carotid Artery

Anterior Cerebral Artery

Anterior Communicating Artery

Posterior Communication

Posterior Cerebral Artery

Question 2

What are the branches of ICA?

Answer 2

Opthalmic Artery

Posterior Communicating Artery

Anterior Choroidal Artery

Anterior Cerebral Artery

Middle Cerebral Artery

Question 3

What blood vessels supply the cerebral cortex?

Answer 3

Anterior Cerebral Artery

Middle Cerebral Artery

Posterior Cerebral Artery

Question 4

What blood vessels supply the corpus stiatum?

Answer 4

Middle Cerebral Artery & Anterior Cerebral Artery

Question 5

What blood vessels supply the neural retina

Answer 5

Central retinal artery

Question 6

What blood vessels supply the thalamus?

Answer 6

Posterior Cerebral Artery

Posterior Communicating artery

Anterior Choroidal Arteries

Question 7

What blood vessels supply the midbrain?

Answer 7

Posterior cerebral artery

Basilar Artery

Question 8

What blood vessels supply the pons?

Answer 8

Basilar artery

Question 9

What blood vessels supply the medulla?

Answer 9

Basilar artery

Vertebral artery

Question 10

What blood vessels supply the Cerebellum?

Answer 10

Superior Cerebellar Arteries

Anterior Inferior Cerebellar Artery (AICA)

Posterior Inferior Cerebellar Artery

Question 11

What blood vessels supply the spinal cord?

Answer 11

anterior spinal artery

Posterior spinal artery

Question 12

What are basilar branches?

Answer 12

Superior cerebellar artery

Anterior inferior cerebellar artery

Question 13

Where is posterior inferior cerebellar artery (PICA) derived

Answer 13

Vertebral artery

Question 14

What does MCA specifically supply?

Answer 14

Lateral Surface of Hemisphere

Medial cortex of temporal pole

EXCEPT dorsal ridge, occipital lobe, inferior lateral temporal lobe

Question 15

What does the ACA supply specifically?

Answer 15

Supplies dorsal ridge of lateral hemisphere & dorsal part of medial hemisphere up to parietal-occipital sulcus

Question 16

What does the Posterior Cerebral Artery supply?

Answer 16

Lateral and medial parts of occipital lobe

Hippocampus

Inferior lateral and medial parts of the temporal lobe.

Question 17

PICA supplies what? (Be specific)

Answer 17

Courses b/w medulla and cerebellum

Lateral medulla which include:
Vestibular nuclei
Lateral corticospinal tracts
Inferior cerebellar peduncle
Nucleus ambiguous
Descending sympathetic fibers

Question 18

What are the branches of the Basilar Artery?

Answer 18

Pontine Arteries

Labyrinthine artery

Anterior inferior cerebellar artery

Superior cerebellar artery

Posterior cerebral artery

Question 19

Pontine arteries?

Answer 19

Branch of the Basilar artery

Supplies pons

Question 20

PCA?

Answer 20

PCA is from the Basilar artery which helps form the circle of Willis

Question 21

Labyrinthine arteries

Answer 21

Arises from Basilar in 15% of population

Accompanies facial nerve & vestibucochlear nerve into internal acoustic meatus to supply inner ear

Branch of the Basilar artery

Question 22

Anterior Inferior Cerebellar artery

Answer 22

Branch of the Basilar artery

Supplies anterior and inferior parts of the cerebellum

Also supplies pons, parts of medulla, cochlear nuclei

Labyrinthine artery arises from AICa in 85% of population

Question 23

Superior Cerebellar Artery

Answer 23

Supplies superior surface of cerebellum, some deep cerebellar deep nuclei, parts of pons and midbrain

Question 24

Superior Cerebral Veins

Answer 24

Major external veins of cerebrum.
Emptying into superior sagittal sinus via small bridging veins

They mostly drain blood from lateral side of cerebral hemispheres

Question 25

Great Cerebral Vein of Galen

Answer 25

Internal cerebral veins joins this vein Later joins the inferior sagital sinus( drains blood from medial parts of the cerebrum) which dumps into the straight sinus