Arteries

Question 1

Arteries

Answer 1

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

Question 2

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

Answer 2

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

Question 3

The wall of the artery is ………..

it has layers of

Answer 3

thick

collagen, smooth muscle and elastic fibres

Question 4

The elastic fibres allow the artery wall to

Answer 4

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

Question 5

What happens to the fibres when the heart relaxes

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

Answer 5

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