Describe the functions of the main regions of the digestive system, limited to: (a) mouth – ingestion, physical digestion, chemical digestion of starch by amylase (b) salivary glands – secretion of saliva containing amylase (c) stomach – physical digestion, chemical digestion of protein by protease, presence of hydrochloric acid in gastric secretions (d) small intestine (duodenum and ileum) – chemical digestion of starch by amylase, maltose by maltase, protein by protease and lipids by lipase (e) liver – production of bile and storage of glycogen (f) gall bladder – storage of bile (g) pancreas – alkaline secretion containing amylase, protease and lipase (h) ileum and colon – absorption (i) rectum and anus – egestion

Identify, on diagrams, the kidneys, ureters, bladder and urethra and state the function of each (the function of the kidney should be described simply as removing urea and excess salts and water from the blood as urine)