Blood supply to brain Flashcards by Anna-Leigh Bibby

Q

Where does the vertebral artery branch from?

A

From the Right Subclavian and the left subclavian.

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Q

What are the two main arteries that make up the circle of Willis?

A

Internal carotid artery
Vertebral artery

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Q

What is the system of vessels that supply blood to the brain called ?

A

Circle of Willis

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Q

Where do the internal carotid veins enter the skull ?

A

carotid canal

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Q

What is A?

A

Anterior Cerebral artery

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Q

What is B ?

A

Anterior Communicating artery

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Q

What is C?

A

Ophthalmic artery

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Q

What is D?

A

Anterior Choroidal Artery

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Q

What is E?

A

Internal Carotid Artery

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Q

What is F ?

A

Middle Cerebral artery

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Q

What is G ?

A

Posterior Communicating artery

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Q

What is H ?

A

Posterior Cerebral Artery

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Q

What is I ?

A

Superior Cerebellar artery

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Q

What is J ?

A

Pontine arteries

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Q

What is K?

A

Basilar artery

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Q

What is L ?

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A

Anterior Inferior Cerebellar artery

Q

What is M ?

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A

Vertebral artery

Q

What is N ?

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A

Anterior Spinal Artery

Q

What is O ?

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A

Posterior Inferior Cerebellar Artery

Q

Where do the vertebral arteries originate?

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A

Subclavian arteries

Q

What arteries form the basilar artery?

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A

vertebral artery

Q

Between which layers of the brain do the main arteries of the brain run?

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A

Arachnoid and Pia

Q

Through which hole does the internal carotid artery enter the skull?

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A

Carotid canal

Q

Through which hole does the vertebral artery enter the skull?

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A

foramen magnum

Which artery gives off branches that supply the pons?

Basilar artery

The internal cartoid artery directly becomes which artery?

Middle cerebral

What is the most superficial meningeal layer?

Dura Matter

Where does the basilar artery supply ?

The pons

What is the Venous Drainage of the brian ?

- No valves, meaning blood can go in any direction - Superior and inferior sagittal sinus. - Great cerebral vein - All come together to form the confluence of sinuses.

cavernous sinus can get venous blood from elsewhere, why is this important?

- If there's an infection, e.g. in the nasal cavity, the blood is getting pretty close to the brain, and that's a risk. - However, it is protected by the blood-brain barrier.