Blood Supply to the Brain and Spinal Cord Flashcards Preview

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Flashcards in Blood Supply to the Brain and Spinal Cord Deck (43)
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1

At what spinal level does the common carotid artery bifurcate?

C4

2

What is the pathway of the ICA into the cranial cavity?

Move up the carotid sheath to the carotid canal
Pass through the cavernous sinus

3

What branches does the ICA give rise to?

Ophthalmic
Middle cerebral
Posterior communicating
Anterior cerebral

4

What arteries give rise to the vertebral arteries?

Subclavian

5

What is the pathway of the vertebral arteries into the cranial cavity?

Transverse foramen in the spine
Foramen magnum

6

What branches do the vertebral arteries give rise to?

Meningeal branches
Anterior and posterior spinal
Posterior inferior cerebellar

7

In which fissure is the anterior cerebral artery found?

Longitudinal fissure

8

In which fissure is the middle cerebral artery found?

Lateral fissure

9

In which fissure is the posterior cerebral artery found?

Transverse fissure

10

What functional areas does the middle cerebral artery supply?

Primary motor cortex
Primary sensory area
Primary auditory area
Area for olfaction

11

Where does the primary visual cortex receive its blood supply from?

Calcarine branch of posterior cerebral artery

12

What artery is formed from the convergence of the vertebral arteries?

Basilar artery

13

What main arteries form the Circle of Willis?

Anterior cerebral arteries
Internal carotid arteries
Posterior cerebral arteries

14

What part of the brain does the anterior cerebral artery supply?

Anteromedial part of the cerebrum

15

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

Lateral part of the brain

16

What part of the brain does the posterior cerebral artery supply?

Posterior part of the cerebrum

17

What arteries supply the spinal cord?

Anterior spinal artery
2 posterior arteries

18

Where do the venous sinuses ultimately drain to?

Internal jugular vein

19

How many venous sinuses are there?

11

20

What venous sinuses are found in the fall cerebri?

Superior sagittal sinus
Inferior sagittal sinus
Straight sinus

21

Where do the sinuses converge?

Confluence of the sinuses

22

What pathway does the confluence of sinuses take to the internal jugular vein?

Transverse to sigmoid to internal jugular vein

23

Where is the cavernous sinus located?

Either side of the sella turcica

24

What drains into the cavernous sinus?

Ophthalmic sinus

25

What are the superficial veins which drain the cerebral cortex?

Superior cerebral vein
Superficial middle cerebral vein
Inferior cerebral vein
Superior anastamotic vein
Inferior anastomotic vein

26

What veins are responsible for draining the cerebellar cortex?

Superior cerebellar veins
Inferior cerebellar veins

27

What veins are responsible for draining the spinal cord?

3 anterior spinal veins
3 posterior spinal veins

28

What is the function of the ventricles?

Production, transport and removal of CSF

29

What is the function of cerebrospinal fluid?

Protection (cushions brain)
Buoyancy (reduces weight of brain, so reduced pressure on base)
Chemical stability

30

What are the ventricles lined with?

Ependymal cells