A-LevelBiologyTransport in mammals9700/12 · Feb/Mar 2018 · Q301 Mark

Which statement about the blood flow in the cardiac cycle is correct?

ABlood flows into the aorta through the semilunar valve due to contraction of the right ventricle.

BBlood flows into the left atrium through the pulmonary artery when the wall of the left atrium relaxes.

CBlood flows into the right atrium through the vena cava when the wall of the right atrium relaxes.

DBlood flows into the right ventricle through the semilunar valve due to contraction of the right atrium.

✓ Correct answer

C: Blood flows into the right atrium through the vena cava when the wall of the right atrium relaxes.

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Topic: Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2018 Paper 1 Variant 2, question 30.

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