This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

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A hole in the tissue between the ventricles (a ventricular septal defect) allows oxygenated blood from the left ventricle to mix with deoxygenated blood from the right ventricle. This means that the blood pumped to the body contains less oxygen than it should. When the brain does not receive enough oxygen, it can lead to a temporary loss of consciousness, causing the man to faint.
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A hole in the tissue between the ventricles (a ventricular septal defect) allows oxygenated blood from the left ventricle to mix with deoxygenated blood from the right ventricle.
This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.