Biology 9700 · AS & A Level · The circulatory system

The circulatory system — practice question

Fig. 6.1 shows a cross-section of a diseased artery from a smoker.

(a(i))[2]

Using Fig. 6.1, describe the differences in appearance between this diseased artery and a healthy artery.

(a(ii))[1]

State one way in which nicotine in tobacco smoke affects arteries.

(b(i))[2]

For an artery, give one structural feature together with the function it provides.

(b(ii))[2]

For a capillary, give one structural feature together with the function it provides.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Atheroma build-up reduces lumen diameter” …