Glucose moves from the small intestine into the blood. Fig. 6.1 illustrates the human circulatory system and the route followed by molecules, such as glucose, as they travel in the blood.
(a)[4]
Complete Table 6.1 by giving the names of the blood vessels labelled on Fig. 6.1 and indicating whether each carries oxygenated blood or deoxygenated blood.
(b(i))[2]
Define what is meant by the term hormone.
(b(ii))[3]
Describe the role of insulin in the body.
(c)[3]
Explain how blood flow in the skin helps to maintain a constant body temperature in very hot conditions.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A: hepatic portal vein - deoxygenated” …