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A-LevelBiologyTransport in mammals9700/12 · May/June 2019 · Q281 Mark

At a certain point in a cardiac cycle, the pressure in the right ventricle is lower than that in the right atrium and lower than that in the pulmonary artery. Which row is correct?

Aatrioventricular valve: closed, semilunar valve: closed
Batrioventricular valve: closed, semilunar valve: open
Catrioventricular valve: open, semilunar valve: closed
Datrioventricular valve: open, semilunar valve: open

✓ Correct answer

C: atrioventricular valve: open, semilunar valve: closed

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About this question

Topic
Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2019 Paper 1 Variant 2, question 28.

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