5 Written Questions

1. swallowing
2. organ in which most chemical digestion takes place
3. first portion of the small intestine which receives secretions from the gallbladder and pancreas
4. produces insulin and glucagon, enzymes, and sodium bicarbonate
5. produce an acidic mucus in the stomach

5 Matching Questions

1. microvilli
2. jejunum
3. epiglottis
4. mechanical processing
5. cardioesophageal sphincter

1. a physical breakdown of foods
2. b muscular opening between the esophagus and stomach
3. c extensions of the plasma membrane that increase its surface area
4. d flap of cartilage that covers the trachea while swallowing
5. e second portion of the small intestine where most chemical digestion is completed

5 Multiple Choice Questions

1. the throat; last place food and air mix
   1. pharynx
   2. pancreas
   3. haustra
   4. serosa
2. serous membrane that lines the abdominal cavity
   1. large intestine
   2. peristalsis
   3. soft palate
   4. parietal peritoneum
3. process by which nutrient molecules pass through the wall of the digestive system into the blood
   1. mastication
   2. secretion
   3. gastrin
   4. absorption
4. a substance produced by the liver that breaks up fat particles
   1. villi
   2. bile
   3. ileum
   4. liver
5. digestive tract consisting of a tube running between the mouth and the anus
   1. segmentation
   2. salivary glands
   3. alimentary canal
   4. parietal cells

5 True/False Questions

1. Peyer's patches → involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system

   True        False

2. pyloric sphincter → circular muscle that controls the movement of chyme from the stomach to the small intestine

   True        False

3. rennin → enzyme hat begins the breakdown of proteins in the stomach

   True        False

4. salivary amylase → three pairs of exocrine glands in the mouth that secrete saliva; the parotid, submandibular (submaxillary), and sublingual glands

   True        False

5. liver → produces bile and stores glycogen

   True        False