McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
| 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 | |
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