Fig. 3.1 illustrates how blood pressure alters as blood passes through part of the circulatory system, starting in the right atrium, going to the lungs, and finishing in the pulmonary vein.
(a)[2]
State which chamber of the heart is shown by C. Explain your answer.
(b)[2]
Explain the reasons for the regular changes in blood pressure in region D.
(c(i))[1]
Identify region E.
(c(ii))[3]
Describe and explain the chemical changes taking place in region E.
(d)[3]
Describe and explain how a graph showing blood pressure changes as blood moves from the heart to the rest of the body and then back again would be different from Fig. 3.1.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “the right ventricle” …