Arteries Flashcards

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1
Q

Arteries

A

transport blood away from the heart (usually at high pressure)

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2
Q

Arteries must be able to withstand ……………….. generated by ………… and maintain when

A

Arteries must be able to withstand high pressures generated by the contracting heart, and maintain these pressures when the heart is relaxed

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3
Q

The wall of the artery is ………..

it has layers of

A

thick

collagen, smooth muscle and elastic fibres

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4
Q

The elastic fibres allow the artery wall to

A

expand around blood surging through at high pressure when the heart contracts

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5
Q

What happens to the fibres when the heart relaxes

and what does this and the ………..lumen help maintain

A

these fibres then recoil when the heart relaxes – this alongside a narrow lumen maintains high blood pressure

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