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Flashcards in 4.2 Brain Blood Supply Deck (26):
1

Where do the vertebral arteries arise from and go to?

Come off subclavian arteries

Through transverse foramina

Into skull through foramen magnum

2

Where do the vertebral arteries enter the brain circulation?

Posterior circulation

3

What do the vertebral arteries join together to form?

Basilar artery

4

What is the main input of blood into the posterior circulation of the brain?

Vertebral arteries

5

What is the main input of blood into the anterior circulation of the brain?

Internal Carotid arteries

6

Why is it important to consider the brain in terms of anterior and posterior blood circulation?

Different clinical pictures can present depending in which area a stroke is found

7

What are the two main vessels in the anterior circulation going into the brain?

Anterior and middle cerebral arteries

8

What area of the brain does the middle cerebral artery supply?

The majority of the lateral aspect

9

What kind of stroke can affect the visual fields?

MCA stroke

10

What is the link of the Circle of Willis between the anterior cerebral arteries called?

Anterior communicating artery

11

What does the basilar artery sit on/in front of?

Pons

12

What do the posterior cerebral arteries come off of?

Basilar artery

13

Which blood vessel supplies the primary visual cortex?

PCA

14

How are the posterior and anterior cerebral arteries connected to each other?

Via the posterior communicating arteries

15

What is the purpose of the circle of Willis?

Collateral blood supply

In case there is a blockage

16

How are the anterior spinal arteries formed?

Small branches off each vertebral artery

17

What do the anterior spinal arteries supply?

Anterior 2/3 of spinal cord

18

What are the branches off the basilar artery called?

Pontine arteries

19

Which bloods vessel(s) supply the pons and what vessels are these a branch of?

Pontine arteries

Basilar artery

20

What is affected in Locked in Syndrome?

Pontine arteries

21

What do the superior cerebellar arteries supply?

Top of cerebellum

22

What do the anterior and posterior inferior cerebellar arteries supply?

Front and back bottom portions of the cerebellum

23

Which vessel does the opthalmic artery come off of?

Middle cerebral artery

24

What important set of vessels come off the middle cerebral artery?

Lenticulostriate arteries

25

Why are the lenticulostriate arteries susceptible to emboli?

Because they are so small

26

What do the posterior cerebral and cerebellar arteries supply, besides their main structures?

Brainstem