If the left atrioventricular valve in the heart does not close completely it results in blood flowing back into the atrium during ventricular systole. What would be the immediate effect of this back flow?
✓ Correct Answer
The correct answer is D: raised pressure in the left atrium and less blood enters the aorta
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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