(i) What is meant by the term organ?

(ii) Name the organ labelled in the diagram that is part of the circulatory system, and state its corresponding letter.

(iii) Name three other mammalian organ systems represented by the labelled organs (A–G) in the diagram.

(iv) Name one organ system that is not represented by any of the labelled organs (A–G) in the diagram.

The list below details several physiological processes that take place in mammalian organs. For each process, identify the correct organ name and its corresponding letter (A–G) from the diagram:

• Generation of blood pressure to circulate oxygenated blood
• Deamination of excess amino acids and synthesis of bile
• Passive diffusion of oxygen and carbon dioxide across a gas exchange surface
• Production and secretion of the hormones insulin and glucagon
• Acidic hydrolysis of proteins by the enzyme pepsin