Lecture 7: Coronary Cerebral Blood Flow Flashcards

1
Q

Is there a high or low density of coronary capillaries?

A

High!

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2
Q

Is metabolic vasoconstriction or vasodilatation the dominant controlling factor of the coronary blood blow?

A

Vasodilatation.

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3
Q

Do arteries or arterioles receive richer autonomic innervation?

A

Arteries.

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4
Q

Does 5HT act as a powerful vasoconstrictor or vasodilator in cerebral arteries?

A

Vasoconstrictor.

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5
Q

What does the Circle of Willis ensure?

A

That even if there is a blockage to one internal carotid artery then the flow is not stopped.

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