McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
| 151. |
Choose a single incorrect answer about absorption from small intestine: |
| A. | Gastric HCL help iron absorption |
| B. | K+ions are absorped passively. |
| C. | HCO3- ions are absorbed passively. |
| D. | none |
| Answer» C. HCO3- ions are absorbed passively. | |
| 152. |
The absorptive surface area of small intestineis over: |
| A. | 2.8m |
| B. | 250m2 |
| C. | 7m |
| D. | 50m2 |
| Answer» B. 250m2 | |
| 153. |
Intestinal motility help absorption from small intestine by all the following except: |
| A. | Increase blood and O2 supply. |
| B. | Increase lymph flow. |
| C. | Increase osmotic pressure. |
| D. | Increase contact of food with mucosa. |
| Answer» C. Increase osmotic pressure. | |
| 154. |
The following statement about calcium absorption from small intestine are true except: |
| A. | It occurs by active transport. |
| B. | It requires vit. D and parathormone. |
| C. | It occours by passive diffusion from upper small intestine. |
| D. | It is decreased by excess phosphate and oxalate in food. |
| Answer» C. It occours by passive diffusion from upper small intestine. | |
| 155. |
The following are true statement about fat absorption from small intestine except: |
| A. | It is helped by bile salts. |
| B. | Glycerol and short chain FAs are absorped passively. |
| C. | Deficiency of fat absorption leads to poor absorption of VIT.B complex. |
| D. | Chylomicrons are extruded into Lacteal laterals by exocytosis. |
| Answer» C. Deficiency of fat absorption leads to poor absorption of VIT.B complex. | |
| 156. |
The transport of glucose across intestinal mucosa is directly dependent Upon the following except: |
| A. | Na concentration in intestinal lumen. |
| B. | Plasma insulin. |
| C. | Inhibitors of energy metabolism. |
| D. | none |
| Answer» B. Plasma insulin. | |
| 157. |
Absorption of fat soluble vitamins require the following: |
| A. | Bile. |
| B. | Bile and chymotrypsine. |
| C. | Bile and pancreatic amylase. |
| D. | None of the above. |
| Answer» A. Bile. | |
| 158. |
The major site of absorption of VIT B12 is: |
| A. | Duodenum. |
| B. | Jujenum. |
| C. | Colon. |
| D. | Ileum. |
| Answer» D. Ileum. | |
| 159. |
The following are true statement about absorption from small intestine except: |
| A. | Hexose are absorped faster than pentose. |
| B. | D amino acids are absorped better than L amino acids. |
| C. | Glucose is absorped faster than fructose. |
| D. | none |
| Answer» B. D amino acids are absorped better than L amino acids. | |
| 160. |
The amount of water excreted in stool is about: |
| A. | 100mld |
| B. | 0.5Ld |
| C. | 0.4Ld |
| D. | none |
| Answer» A. 100mld | |
| 161. |
Absorption of Na ions from small intestine occur by the following except: |
| A. | Special Na channel. |
| B. | Cotransported with Cl. |
| C. | Cotrannsported with glucose and amino acids. |
| D. | None of the above. |
| Answer» D. None of the above. | |
| 162. |
Absorption of Cl- ions from small intestine occur by the following ways except: |
| A. | 2ry active transport. |
| B. | 1 ry active transport. |
| C. | Passive diffusionparacellularly. |
| D. | none |
| Answer» B. 1 ry active transport. | |
| 163. |
All of the followings are absorped by Na dependent 2ry active transport except: |
| A. | Glucose and galactose. |
| B. | Amino acids. |
| C. | VitaminC |
| D. | VitaminB.12 |
| Answer» D. VitaminB.12 | |
| 164. |
The following are true statement about iron absorption from small intestine except: |
| A. | It is actively absorped from duodenum and jejunum. |
| B. | Its absorption is decreased by tannin. |
| C. | Its absorption is helped by vitamin C. |
| D. | It is transported from the brush borderas Fe+3 or heme. |
| Answer» D. It is transported from the brush borderas Fe+3 or heme. | |
| 165. |
Fructose is absorped from small intestine by : |
| A. | Simple diffusion. |
| B. | Facilitated diffusion. |
| C. | Na+ dependent 2ry active transport. |
| D. | none |
| Answer» B. Facilitated diffusion. | |
| 166. |
Pentose is absorped from small intestine by: |
| A. | Simple diffusion. |
| B. | Facilitated diffusion. |
| C. | Na+ dependant 2ry active transport. |
| D. | none |
| Answer» A. Simple diffusion. | |
| 167. |
Whole proteins may be absorped from small intestine by : |
| A. | Pinocytsis. |
| B. | Na+dependant 2ry active transport. |
| C. | Facilitated diffusion. |
| D. | none |
| Answer» A. Pinocytsis. | |
| 168. |
Vitamin D is absorped from small intestine as the absorption of : |
| A. | Water soluble vitamins. |
| B. | Glycerol. |
| C. | Cholesterol. |
| D. | Short chain fatty acids |
| Answer» C. Cholesterol. | |
| 169. |
VitaminC is absorped from small intestine by: |
| A. | Passive diffusion. |
| B. | Na+ dependant 2ry active transport. |
| C. | 1ry active transport. |
| D. | none |
| Answer» B. Na+ dependant 2ry active transport. | |
| 170. |
Peristaltic contractions of small intestine are characterized by all of the followings except: |
| A. | They are myogenic |
| B. | They are due to local axon reflex |
| C. | They are stimulated by gastro-enteric reflex |
| D. | none |
| Answer» A. They are myogenic | |
| 171. |
The following reflexes inhibit small intestine motility except: |
| A. | Peritoneo-intestinal |
| B. | Reno-intestinal |
| C. | Gastro-ileal. |
| D. | Somato-intestinal. |
| Answer» C. Gastro-ileal. | |
| 172. |
Rhythmic segmentation of small intestine is characterized by the following except: |
| A. | It is due to local axon reflex. |
| B. | It is myogenic. |
| C. | Its frequency is determined by BER. |
| D. | Its main function is to mix chyme with the digestive juice. |
| Answer» A. It is due to local axon reflex. | |
| 173. |
Peristaltic waves in the small intestine are characterized by the following statement except: |
| A. | They occur in response to distention of the wall. |
| B. | Can be abolished by local application of coccaine |
| C. | They are controlled primarily by extrinsic innervation |
| D. | none |
| Answer» C. They are controlled primarily by extrinsic innervation | |
| 174. |
Migration motor complex is characterized by the following except: |
| A. | It starts in the stomach and spread to terminal ilium. |
| B. | Occurs every1-1.5h. |
| C. | It helps digestion of food |
| D. | It prevents duodeno-gastric reflux. |
| Answer» C. It helps digestion of food | |
| 175. |
Peristaltic rush are characterized by the following except: |
| A. | They are strong peristaltic contraction. |
| B. | They occur normally. |
| C. | they occur when there is intense irritation or distention of the small intestine. |
| D. | They are intiated by reflexes involving the intrinsic and extrinsic nerves. |
| Answer» B. They occur normally. | |
| 176. |
Small intestine motility is stimulated by the following except: |
| A. | Gastrin |
| B. | CCK |
| C. | Secretin |
| D. | Motilin. |
| Answer» C. Secretin | |
| 177. |
Small intestine motility is inhibited by the following except: |
| A. | Somatostatin. |
| B. | VIP. |
| C. | Adrenaline |
| D. | Insulin. |
| Answer» D. Insulin. | |
| 178. |
Motility of small intestine is inhibited by the following except: |
| A. | Intestino-intestinal reflex |
| B. | Vesico-intestinal reflex. |
| C. | Peritoneal irritation |
| D. | Distention of stomach. |
| Answer» D. Distention of stomach. | |
| 179. |
Large intestinal secretion is stimulated by: |
| A. | Direct stimulation. |
| B. | Local myentric reflex. |
| C. | Para sympathetic stimulation. |
| D. | All of the above. |
| Answer» D. All of the above. | |
| 180. |
Colonic motility is stimulated by the following except: |
| A. | Gastro-colic reflex. |
| B. | Colono-colic reflex. |
| C. | Duodeno-colic reflex. |
| D. | none |
| Answer» B. Colono-colic reflex. | |
| 181. |
Emptying at ileocecal region is promoted by: |
| A. | Distenion of cecum |
| B. | Distention of colon. |
| C. | Distention of stomach. |
| D. | Sympathetic reflex. |
| Answer» C. Distention of stomach. | |
| 182. |
Emptying at ileocecal region is inhibited by: |
| A. | Gastroileal reflex. |
| B. | Gastrin |
| C. | Colonoileal reflex. |
| D. | Distention of terminal ilium. |
| Answer» C. Colonoileal reflex. | |
| 183. |
Removal of the entire colon would be expected to cause: |
| A. | Megaloblstic anemia. |
| B. | Severe malnutrition. |
| C. | Decrease urinary urobilinogen. |
| D. | Death. |
| Answer» C. Decrease urinary urobilinogen. | |
| 184. |
The parasympathetic supply of the distal colon is: |
| A. | Pelvic nerve. |
| B. | Vagus nerve |
| C. | The lesser splanchnic nerve. |
| D. | The pudendal nerve. |
| Answer» A. Pelvic nerve. | |
| 185. |
The external anal sphincter is supplied by: |
| A. | Pelvic nerve. |
| B. | Pudendal nerve. |
| C. | Vagus nerve |
| D. | none |
| Answer» B. Pudendal nerve. | |
| 186. |
Large intestine secretion is stimulated by: |
| A. | Direct stimulation. |
| B. | Local .myentric reflex. |
| C. | Parasympathetic stimulation. |
| D. | All the above. |
| Answer» D. All the above. | |
| 187. |
Mass movement in the colon after meal is due to the following except: |
| A. | Gastrocolic reflex |
| B. | Duodenocolic reflex |
| C. | Gastrin hormone. |
| D. | Secretine hormone. |
| Answer» D. Secretine hormone. | |
| 188. |
Mass movement in the colon would be abolished by: |
| A. | Vagotomy. |
| B. | Sympathectomy. |
| C. | Destruction of the intrinsic nerve plexus. |
| D. | none |
| Answer» C. Destruction of the intrinsic nerve plexus. | |
| 189. |
The following are true about defecation except: |
| A. | It is initiated by distention of rectum with feces. |
| B. | It is facilitated by micturition reflex. |
| C. | It is under voluntary control in infant. |
| D. | It is inhibited by pain. |
| Answer» C. It is under voluntary control in infant. | |
| 190. |
Anal mucosa is sensitive to all of the following except: |
| A. | Pain |
| B. | Stretch. |
| C. | Touch |
| D. | Temperature |
| Answer» B. Stretch. | |
| 191. |
Rectal mucosa is sensitive to: |
| A. | Pain |
| B. | Touch |
| C. | Temperature |
| D. | Stretch |
| Answer» D. Stretch | |
| 192. |
Resting anal pressure is mainly due to : |
| A. | Tone of external anal sphincter |
| B. | Tone of the internal sphincter. |
| C. | Tone of the puborectalis muscle. |
| D. | none |
| Answer» B. Tone of the internal sphincter. | |
| 193. |
Fecal continence requires: |
| A. | Intact innervations of anorectal region |
| B. | Sensation of rectum and anal mucosa. |
| C. | Tone of the internal and external anal sphincter |
| D. | All of the above |
| Answer» D. All of the above | |
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