McqMate
101. |
Chemotrypsinogen in pancreatic juice is activated by: |
A. | Enterokinase |
B. | Alkaline PH |
C. | Trypsin |
D. | Bile salts |
Answer» C. Trypsin |
102. |
Pancreatic lipase is activated by: |
A. | gastrin |
B. | Bile salts |
C. | Enterokinase |
D. | none |
Answer» B. Bile salts |
103. |
All of the following statements concerning pancreatic secretion are true except: |
A. | Its pH is about 8 |
B. | Has high HCO₃⁻ content |
C. | It’s secretion is primarily under neural control |
D. | Contains digestive enzymes |
Answer» C. It’s secretion is primarily under neural control |
104. |
The following stimulate pancreatic secretion rich in enzymes and poor in HCO₃⁻ except: |
A. | CCK |
B. | Gatrin |
C. | Secretin |
D. | Vagal stimulation |
Answer» C. Secretin |
105. |
Loss of pancreatic secretion produces the following except: |
A. | Maldigestion |
B. | Malabsorption |
C. | Dehydration |
D. | Alkalosis |
Answer» D. Alkalosis |
106. |
Pancreatic amylase is activated by: |
A. | Bile salts |
B. | Trypsin |
C. | Cl ⁻ ions |
D. | Enterokinase |
Answer» C. Cl ⁻ ions |
107. |
PH of pancreatic secretion is about: |
A. | 1 |
B. | 6.5- 7.5 |
C. | 8 |
D. | non |
Answer» C. 8 |
108. |
he volume of pancreatic secretion per day is about: |
A. | 0.6 L |
B. | 1.5 L |
C. | 3 L |
D. | non |
Answer» B. 1.5 L |
109. |
All the following statements concerning pancreatic secretion are true except: |
A. | Sympathetic stimulation inhibits pancreatic HCO₃⁻ secretion |
B. | The cephalic phase accounts for about 20 % of secretion after meal |
C. | Pancreatic HCO3 depresses further release of secretin |
D. | Contains enzymes which digest polysaccharides to monosaccharides |
Answer» D. Contains enzymes which digest polysaccharides to monosaccharides |
110. |
Pancreatic secretion is inhibited by all the followings except: |
A. | Somatostatin |
B. | Glucagon |
C. | Acid in the duodenum |
D. | Sympathetic stimulation. |
Answer» C. Acid in the duodenum |
111. |
All the following statements about pancreatic secretion are true except : |
A. | The intestinal phase is the main phase of pancreatic secretion . |
B. | Gastro-pancreatic reflex stimulates pancreatic secretion . |
C. | Failure of both pancreatic and biliary secretions is needed before steatorrhea develops . |
D. | none |
Answer» C. Failure of both pancreatic and biliary secretions is needed before steatorrhea develops . |
112. |
All the following are correct statements about pancreatic secretion except: |
A. | HCO3 rich fluid is secreted by ductal cells in response to secretin . |
B. | Secretion of enzymes by acinar cells occurs in response to CCK. |
C. | Vagotomy augment secretion of enzymes after meal . |
D. | none |
Answer» C. Vagotomy augment secretion of enzymes after meal . |
113. |
Select a single incorrect answer about pancreatic secretion. |
A. | Trypsinogen is activated by enterokinase. |
B. | Chymotrypsinogen is activated by trypsin |
C. | Pancreatic lipase is activated by alkaline pH. |
D. | none |
Answer» C. Pancreatic lipase is activated by alkaline pH. |
114. |
The following statements about pancreatic secretion are false except: |
A. | Pancreatic acini contain trypsin. |
B. | Vagal stimulation produces HCO3 rich juice. |
C. | The hormone which stimulates enzyme _ rich secretion also causes contraction of gall bladder. |
D. | none |
Answer» C. The hormone which stimulates enzyme _ rich secretion also causes contraction of gall bladder. |
115. |
All the following are true about liver functions except: |
A. | Liver cells are the only important site for plasma albumin synthesis. |
B. | Liver cells can store vitamin B12. |
C. | Liver cells inactivates certain hormones by conjugation. |
D. | Essential fatty acids are synthesized in liver. |
Answer» D. Essential fatty acids are synthesized in liver. |
116. |
All the following statements are correct about liver cells except: |
A. | They form non essential amino acids. |
B. | They form hippuric acid by conjugation of benzoate with glycine. |
C. | They form TPP from vitamin B6. |
D. | none |
Answer» C. They form TPP from vitamin B6. |
117. |
Liver perform the following function except: |
A. | Haemopoiesis in adults. |
B. | Formation of about half of body lymph. |
C. | Formation of bile salts. |
D. | none |
Answer» A. Haemopoiesis in adults. |
118. |
Liver functions include all the followings except: |
A. | Excretion of bile. |
B. | Glycogenolysis |
C. | Glycogenesis. |
D. | Formation of essential amino acids. |
Answer» D. Formation of essential amino acids. |
119. |
The following statements about bile secretion are correct exept: |
A. | Canalicular secretion represents 75%of bile secretion. |
B. | Ductular secretion represents 75% of bile secretion. |
C. | Bile is secreted by both the hepatocytes and cholangiocytes. |
D. | none |
Answer» B. Ductular secretion represents 75% of bile secretion. |
120. |
all the following statement about bile secretion are true except: |
A. | Bile contain cholesterol and fatty acids. |
B. | Hepatic bile has lower specific gravity. |
C. | Gall bladder bile contain less organic constituent than hepatic bile |
D. | none |
Answer» C. Gall bladder bile contain less organic constituent than hepatic bile |
121. |
Gall bladder bile is characterized by all the followings except: |
A. | It is relatively acidic |
B. | Darker in color. |
C. | More inorganic constituent. |
D. | Higher specific gravity. |
Answer» C. More inorganic constituent. |
122. |
The following statement about bile salts are correct except: |
A. | They are 2 types 1ry&2nd |
B. | They are Na+ and K+ salts of bile acids conjugated with glucoronic acid. |
C. | They are actively reabsorbed from the terminal ilium. |
D. | none |
Answer» B. They are Na+ and K+ salts of bile acids conjugated with glucoronic acid. |
123. |
All the follwings are true about bile salt except; |
A. | 50% of canalicular flow is dependent on bile salts in the enterohepatic circulation. |
B. | the amount of bill salts in stool is about 0.2-0.4gm/day |
C. | The total circulating pool of bile salts is 0.2-04gm |
D. | none |
Answer» C. The total circulating pool of bile salts is 0.2-04gm |
124. |
The following are choleretics except: |
A. | Bile salts. |
B. | Secretin. |
C. | Acetylcholine. |
D. | Bile pigments |
Answer» D. Bile pigments |
125. |
Which of the followings has the highest pH: |
A. | gastric juice. |
B. | pancreatic juice. |
C. | hepatic bile. |
D. | succus entericus. |
Answer» C. hepatic bile. |
126. |
Bile secretion contains the following constituents except: |
A. | Bile salts. |
B. | Cholesterol. |
C. | Free bilirubin. |
D. | Urobilinogen. |
Answer» C. Free bilirubin. |
127. |
Bile secretion is stimulated by the following except: |
A. | Secretion. |
B. | Bile salts. |
C. | Sympathetic stimulation. |
D. | increase blood flow of liver. |
Answer» C. Sympathetic stimulation. |
128. |
Bile salts promotes lipid absorption as a result of all the followings except: |
A. | Emulsifying fat. |
B. | Formation of micelles. |
C. | Activation of pancreatic lipase. |
D. | Non of the above. |
Answer» D. Non of the above. |
129. |
The following statements about absorption of bile salts are true except: |
A. | Active transport occurs in the distal ileum. |
B. | Removal of distal ileum reduces their absorption. |
C. | Passive diffusion transport of them. |
D. | none |
Answer» C. Passive diffusion transport of them. |
130. |
Emptying of gall bladder is stimulated by the followings except: |
A. | Vagal stimulation. |
B. | Sympathetic stimulation. |
C. | CCK |
D. | none |
Answer» B. Sympathetic stimulation. |
131. |
The following statements are correct about functions of gall bladder except: |
A. | The capacity of gall bladder is 20-60 ml. |
B. | Bile can be concentrated in gall bladder upto 12-20 folds. |
C. | Secretion of NaHCO3 by gall bladder prevents precipitation of calcium. |
D. | none |
Answer» C. Secretion of NaHCO3 by gall bladder prevents precipitation of calcium. |
132. |
Select the single correct answer about bile pigments: |
A. | The principal bile pigment is bilivirdin. |
B. | Free bilirubin is the conjugated bilirubin. |
C. | Cholebilirubin is the conjugated bilirubin. |
D. | Urobilinogen is converted into bilirubin by action of bacteria. |
Answer» C. Cholebilirubin is the conjugated bilirubin. |
133. |
All the following statements about bile pigments are true except: |
A. | They are formed from Hb in RECs. |
B. | In blood bilirubin combines with plasma albumin to form conjugated bilirubin. |
C. | Mostly urobilinogen passes with feces as stercobilinogen. |
D. | none |
Answer» B. In blood bilirubin combines with plasma albumin to form conjugated bilirubin. |
134. |
Contraction of gallbladder is described by the following statement except: |
A. | Occur in response to CCK. |
B. | It is stimulated mainly by acid chyme in duodenum. |
C. | It is inhibited by atropine. |
D. | none |
Answer» B. It is stimulated mainly by acid chyme in duodenum. |
135. |
All the following are correct statements about liver cells except: |
A. | They convert amino acids into glucose. |
B. | They form cholesterol. |
C. | They release glucose when blood glucose tend to decrease. |
D. | They are the only site of synthesis of plasma globulins. |
Answer» D. They are the only site of synthesis of plasma globulins. |
136. |
The following statements about bile salts are true except: |
A. | They help digestion and absorption of fat. |
B. | They have choleretic action. |
C. | They are actively absorbed from duodenum. |
D. | none |
Answer» C. They are actively absorbed from duodenum. |
137. |
Choose a single incorrect answer about bile salts: |
A. | Bile salts are secreted as conjugated bile salts by liver. |
B. | They are converted to 2ry bile salts by action of intestinal bacteria. |
C. | They help absorption of calcium and iron. |
D. | Non of the above. |
Answer» D. Non of the above. |
138. |
Emptying of GB is inhibited by the followings except: |
A. | Somatostatin. |
B. | Sympathetic stimulation. |
C. | Estrogen. |
D. | Progesterone. |
Answer» C. Estrogen. |
139. |
The following statements about succus entericus are true except: |
A. | It contains digestive enzymes. |
B. | Its secretion depends on the amount of chime in small hntestine. |
C. | It is secreted by intestinal glands. |
D. | It is released mainly by vagal stimulation. |
Answer» D. It is released mainly by vagal stimulation. |
140. |
Succus entericus is inhibited by the followings except: |
A. | Adrenaline and noradrenaline. |
B. | Sympathetic stimulation. |
C. | Prostaglandins |
D. | endogenous opiates. |
Answer» C. Prostaglandins |
141. |
Intestinal proteolysis is caused by the followings except: |
A. | Trypsin. |
B. | Carboxypeptidase. |
C. | Chymotrypsin. |
D. | Pepsin. |
Answer» D. Pepsin. |
142. |
The intestinal brush border help digestion by the followings except: |
A. | Facilitating movements of intestinal content. |
B. | Supplying digestive enzymes and special transport system. |
C. | Increasing surface area of intestinal mucosa |
D. | none |
Answer» A. Facilitating movements of intestinal content. |
143. |
Cholera toxins cause diarrhea by: |
A. | Activation of calcium activated C1 – channels in the cells of intestinal crypts. |
B. | Activation of cAMP-activated C1- channels. |
C. | Activation of both Ca++ activated and cAMP- activated C1- channels. |
D. | none |
Answer» B. Activation of cAMP-activated C1- channels. |
144. |
The volume of succus entericus per day is about: |
A. | 0.6L. |
B. | 2L. |
C. | 3L. |
D. | none |
Answer» B. 2L. |
145. |
Digestion of proteins by succus entericus enzymes includes all the following enzymes except: |
A. | Aminopeptidase. |
B. | Carboxypeptidase. |
C. | Nucleases. |
D. | Dipeptidase. |
Answer» C. Nucleases. |
146. |
Lactase enzyme splits lactose into: |
A. | Glucose. |
B. | Glucose and galactose. |
C. | Glucose and fructose. |
D. | none |
Answer» B. Glucose and galactose. |
147. |
Enteric lipase splits neutral fat into: |
A. | Fatty acid and glycerol. |
B. | Fatty acid glycerol and monoglycerides. |
C. | Monoglycerides. |
D. | none |
Answer» B. Fatty acid glycerol and monoglycerides. |
148. |
The main mechamism of succus entericus secretion is: |
A. | Vagal stimulation. |
B. | CCK. |
C. | Secretin |
D. | Local axon reflex |
Answer» D. Local axon reflex |
149. |
The extracellular enzyme in succus entericus is: |
A. | Dipeptidase. |
B. | Entericlipase. |
C. | Lactase. |
D. | Enterokinase. |
Answer» D. Enterokinase. |
150. |
The followings are true statements about absorption from small intestine except: |
A. | Fructose is absorbed by facilitated diffusion. |
B. | Glucose is absorbed by Na+ dependent 2ry active transport. |
C. | Vit. B12 is absorbed by diffusion |
D. | none |
Answer» C. Vit. B12 is absorbed by diffusion |
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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