Lecture 12 Flashcards Preview

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Flashcards in Lecture 12 Deck (15):
1

What is the main artery that feeds anterior and posterior cranial circulation?

Anterior: internal carotid artery
Posterior: Vertebral artery

2

What is the order of the anterior circulation? (7 vessels)

I O P A M A L - noooo bells!
1 Internal carotid artery
- 2 Opthalmic artery
- 3 Posterior communicating artery
- 4 Anterior choroidal artery
5 Anterior cerebral artery (moving up and out in the C shape of the brain)
6 Middle cerebral artery
- 7 Lenticulostriate

3

What is the order of the posterior circulation? (7 vessels)

V I S B I C C - mostly bells!
1 Vertebral artery
- 2 Post Inf CereBELLar A (post)
- 3 Anterior spinal artery
4 Basilar artery
- 5 Ant Inf CereBELLar A (posterior because comes off going backwards, but anterior in name because another one coming from the back)
- 6 Superior cereBELLar artery
- 7 Posterior cereBRAL artery

4

Is posterior circulation mostly cerebral or cerebellar? What is the exception?

CEREBELLAR!
- PICA
- AICA
- Superior cerebellar artery
Exception = posterior cerebral artery

5

Is the anterior circulation mostly cerebral or cerebellar?

ALL cerebral
Anterior cerebral artery
Middle cerebral artery

6

Where does the middle cerebral artery run? What does it supply?

Runs in lateral sulcus
Supplies lateral sides of hemisphere

7

Where does the anterior cerebral artery run? What does it supply?

Runs in the medial longitudinal fissure (follows C shape of brain)
Supplies frontal lobes

8

What does the anterior choroidal artery supply?

Optic nerve

9

What do the lenticulostriates supply?

Basal ganglia

10

Where does the basilar artery run?

On the anterior surface of the pons

11

What does the posterior cerebral artery supply?

Occipital lobe

12

What are the major components of the BBB?

Unfenestrated capillaries connected via gap jxns
Basal laminae
Astrocyte foot processes

13

Where is CSF made?

Choroid plexus of lateral and 4th ventricles

14

How is CSF absorbed?

Arachnoid granulations

15

Describe the venous drainage of the brain.

Superior sagittal sinus
Inferior sagittal sinus --> straight sinus
Confluence of sinuses
Transverse sinuses
Sigmoid sinuses
Internal jugular veins