Biology · May / June 2026 · Paper 42 · Question 6
0610
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When surgeons operate on a heart, the patient can be connected to a heart-lung machine to keep blood flowing around the body during the operation. Figure 6.1 is a diagram of a heart-lung machine connected to a human heart. drainage tubes U pump blood returned to the body oxygenator reservoir of blood removed from the body Q R S T Figure 6.1
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6(a)(i)[3]
Q atrioventricular valve ;
R semilunar valve ;
S left ventricle
6(a)(ii)[1]
T ;
6(a)(iii)[1]
vena cava ;
6(a)(iv)[1]
lung(s) ;
6(b)[1]
coronary (artery) ;
6(c)[4]
1
twice / two (times) ;
2
double ;
3
high(er) ;
4
(aerobic) respiration ;
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