A person has a heart valve at the exit from the right ventricle that does not close fully.
Explain how the structure of the heart and its major blood vessels normally direct blood around the body. Predict how the faulty valve could affect blood flow through the heart and the amount of blood reaching the lungs.
67 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.