1) What is the name of the muscular tube that connects the mouth to the stomach a) Oesophagus b) Trachea c) Duodenum d) Colon 2) What is the main function of the liver in digestion? a) To produce bile b) To absorb nutrients c) To secrete enzymes d) To store glucose 3) What is the term for the rhythmic contractions of the smooth muscles in the digestive tract that move food along? a) Peristalsis b) Mastication c) Segmentation d) Churning 4) What is the name of the finger-like projections in the small intestine that increase the surface area for absorption? a) Villi b) Cilia c) Papillae d) Plicae 5) What is the name of the enzyme in saliva that begins the breakdown of starch? a) Amylase b) Lipase c) Protease d) Lactase 6) What is the name of the sphincter muscle that controls the passage of food from the stomach to the small intestine? a) Pyloric sphincter b) Cardiac sphincter c) Ileocecal valve d) Anal sphincter 7) What is the name of the first part of the large intestine where water and electrolytes are absorbed? a) Cecum b) Ascending colon c) Transverse colon d) Descending colon 8) What is the name of the substance that covers and protects the inner lining of the stomach from acid? a) Mucus b) Bicarbonate c) Pepsinogen d) Gastrin 9) What is the name of the process by which nutrients pass from the small intestine into the bloodstream or lymphatic vessels? a) Ingestion b) Digestion c) Absorption d) Elimination 10) What is the name of the organ that stores and concentrates bile produced by the liver? a) Gallbladder b) Spleen c) Appendix d) Kidney

Structure and function of the digestive system

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