This question was attempted by few candidates and their performance was generally fair. However, the expected answers were as follows:

Functions of Digestive Organs
(i)          Liver

• Deamination of amino acids
• Converts glucose to glycogen in the presence of glucagons
• Desaturates fat
• Produces heat
• Secretes bile
• Stores vitamins B12, A, D, E and K.
• Stores iron derived from diet and breaks down worn out blood cells in the spleen
• Synthesizes vitamin A
• Detoxifies drugs and other noxious substances

(ii)         Small intestine

• onward movement of its contents which is produced by peristaltic movement secretion of intestinal juice
• completion of digestion of carbohydrates/proteins/fats
• secretion of enzymes
• absorption of nutrients materials

Glands that secrete:
(i) Insulin             -       Islets of langerhans
(ii)Adrenalin       -       Adrenal  gland.