Tutorial 5 - Digestive PDF

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Digestive System Quiz Match the following a. b. c. d. e. f.

Digestion Absorption Peristalsis Hydrolysis Ingestion Defecation 1. Process by which the products of digestion pass through the lumen of the gastrointestinal tract into the blood or lymph. 2. Process of taking food into the digestive tract. 3. Sequential waves of contraction and relaxation of the muscularis, propelling food through the digestive tract. 4. Chemical process of breaking down food stuff to substances that can be absorbed. 5. Enzymatic breakdown of any type of food molecule. 6. Elimination of indigestible substances from the body via the anus.

a. b. c. d. e. f. g.

Mouth Oesophagus Stomach Small intestine Large intestine Pancreas Liver 1. 2. 3. 4.

Villi Rugae Hautra Salivary gland

True / False Questions 1. Chemical digestion involves the processes such as segmentation. 2. Enteric gastrin is produced in the stomach. 3. Fats significantly delay the emptying of the stomach. 4. The main chemical activity of the stomach is to begin digestion of carbohydrates. 5. Chemical digestion is initiated in the mouth. 6. The enzyme salivary amylase functions to digest carbohydrates. 7. The peritoneum is the most extensive serous membrane in the body. 8. The myenteric plexus provides the major nerve supply to the GI tract wall and controls GI mobility.

9. The soft palate rises to open the nasopharynx when we swallow food. 10. The digestive function of the liver is to produce digestive enzymes. 11. The storage and concentration area for bile is the gall bladder. 12. The pancreas has both an endocrine and exocrine function. 13. Another name for swallowing is mastication. 14. Most nutrients are absorbed through the mucosa of the intestinal villi by passive transport. 15. Haustral churning is another term for peristalsis.

FILL IN THE BLANKS 1. The function of the parietal cells of the stomach is to produce ___________________. 2. Intrinsic factor is produced by ___________________ and required _____________ in order to be absorbed. 3. If an incision has to be made in the small intestine to remove an obstruction, the first layer of tissue to be cut is the ______________________________. 4. The terminal portion of the small intestine is known as the __________________. 5. One of the major functions of the large intestine is to __________________________. 6. Digestion of ______________ would be affected the most if the liver was severely damaged. 7. The site of production of the enterogastrone choleccystokinin is the _________________. 8. A fluid present in the small intestine during digestion which contains cholesterol, emulsification agents, and phospholipids is ___________________. 9. When the acid contents of the stomach enter the normally alkaline duodenum, _________________ is released, which causes the pancreas to secrete a bicarbonate rich juice.

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