Biology 5090 · O Level · Urinary system

Urinary system — practice question

Fig. 2.1 presents a cross-section of a human kidney together with the structures linked to it.
(a(i))[2]

Name the blood vessels labelled P and Q in Fig. 2.1.

(a(ii))[4]

Name the fluid R in Fig. 2.1 and describe the path it follows after leaving the kidney until it leaves the body.

(b(i))[1]

Suggest why the link formed between blood vessels is called an AV fistula.

(b(ii))[1]

State one difference between blood returning from the kidney machine and blood that leaves the body to enter the kidney machine.

(c)[5]

Describe the function in dialysis of each of these components of a kidney machine: • artificial membrane • dialysis fluid

Worked solution & mark scheme

This 13-mark question has a full step-by-step worked solution and mark scheme. One marking point: P is the renal artery

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