ID: A 187. Bile contains all of the following su a. bile salts. b. lecithin. c.
ID: 3505975 • Letter: I
Question
ID: A 187. Bile contains all of the following su a. bile salts. b. lecithin. c. amylase d. bilirubin. ces except: 188. Segmentation is different from peristalsis because a. segmentation only occurs in the stomach. b. it is a type of mechanical digestion. c. it does not move food through the digestive tract d. There is no difference between segmentation and peristalsis works with gastric inhibitory peptide to inhibit gastric peristalsis? a. Retropulsion b. Cholecystokinin c. The enterogastric reflex d. Both B and C Which of the following protein-digesting enzymes is made in the stomach? a. Trypsin b. Chymotrypsin c. Pepsin d. Peptidase 190. Which of the following is not a stage in deglutition? a. Gastric b. Oral c. Pharyngeal d. Esophageal 191. 192. The end product of amylase digestion is: a. glucose. b. maltose. c. fructose. d. sucrose. 193. The parietal cells of the stomach do not produce which of the following? Pepsinogen Hydrochloric acid Intrinsic factor a. b. c. d. The parietal cell of the stomach produces all of the above.Explanation / Answer
187- C) Amylase is found in saliva which initiates digestion in mouth by catalysing the hydrolysis of starch into sugars
188-C) peistalisis move the food from digestive tract by contracting longitudnal muscles , both are a part of mechanical digestion
segmentation conmtracts circular muscles to mix up and churn the food
189- D) the enterogastric reflex is activated in deoudenum when ph is 3-4 then the release of gastrin in G-cells in antrum of the stomach is cut off leading to inhibition of gastric mobility
Cholecystokinin (CCK) is in duodenum and stimulates release of digestive enzymes in pancreas and emptying of bile from gall bladder. It too inhibits gastric mobility
190- c) pepsin digests protein which is produced by cheif cells of stomach its inactive form is known as pepsinogen
191- A) deglutition is the mixing of food completely with saliva starts orally then to pharyngeal then to oesophageal but gastric part starts churning not deglutition
192- B) Amylase hydrolyses starch which in turn is formed to maltose
193- A) parietal cells secrete HCl not Pepsinogen because it is secreted by Cheif cells after the stimulus of presence of HCl in stomach