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This set of Digestion Multiple Choice Questions & Answers (MCQs) focuses on Digestion Set 5

Q1 | Chemotrypsinogen in pancreatic juice is activated by:
  • Enterokinase
  • Alkaline PH
  • Trypsin
  • Bile salts
Q2 | Pancreatic lipase is activated by:
  • gastrin
  • Bile salts
  • Enterokinase
  • none
Q3 | All of the following statements concerning pancreatic secretion are true except:
  • Its pH is about 8
  • Has high HCO₃⁻ content
  • It’s secretion is primarily under neural control
  • Contains digestive enzymes
Q4 | The following stimulate pancreatic secretion rich in enzymes and poor in HCO₃⁻ except:
  • CCK
  • Gatrin
  • Secretin
  • Vagal stimulation
Q5 | Loss of pancreatic secretion produces the following except:
  • Maldigestion
  • Malabsorption
  • Dehydration
  • Alkalosis
Q6 | Pancreatic amylase is activated by:
  • Bile salts
  • Trypsin
  • Cl ⁻ ions
  • Enterokinase
Q7 | PH of pancreatic secretion is about:
  • 1
  • 6.5- 7.5
  • 8
  • non
Q8 | he volume of pancreatic secretion per day is about:
  • 0.6 L
  • 1.5 L
  • 3 L
  • non
Q9 | All the following statements concerning pancreatic secretion are true except:
  • Sympathetic stimulation inhibits pancreatic HCO₃⁻ secretion
  • The cephalic phase accounts for about 20 % of secretion after meal
  • Pancreatic HCO3 depresses further release of secretin
  • Contains enzymes which digest polysaccharides to monosaccharides
Q10 | Pancreatic secretion is inhibited by all the followings except:
  • Somatostatin
  • Glucagon
  • Acid in the duodenum
  • Sympathetic stimulation.
Q11 | All the following statements about pancreatic secretion are true except :
  • The intestinal phase is the main phase of pancreatic secretion .
  • Gastro-pancreatic reflex stimulates pancreatic secretion .
  • Failure of both pancreatic and biliary secretions is needed before steatorrhea develops .
  • none
Q12 | All the following are correct statements about pancreatic secretion except:
  • HCO3 rich fluid is secreted by ductal cells in response to secretin .
  • Secretion of enzymes by acinar cells occurs in response to CCK.
  • Vagotomy augment secretion of enzymes after meal .
  • none
Q13 | Select a single incorrect answer about pancreatic secretion.
  • Trypsinogen is activated by enterokinase.
  • Chymotrypsinogen is activated by trypsin
  • Pancreatic lipase is activated by alkaline pH.
  • none
Q14 | The following statements about pancreatic secretion are false except:
  • Pancreatic acini contain trypsin.
  • Vagal stimulation produces HCO3 rich juice.
  • The hormone which stimulates enzyme _ rich secretion also causes contraction of gall bladder.
  • none
Q15 | All the following are true about liver functions except:
  • Liver cells are the only important site for plasma albumin synthesis.
  • Liver cells can store vitamin B12.
  • Liver cells inactivates certain hormones by conjugation.
  • Essential fatty acids are synthesized in liver.
Q16 | All the following statements are correct about liver cells except:
  • They form non essential amino acids.
  • They form hippuric acid by conjugation of benzoate with glycine.
  • They form TPP from vitamin B6.
  • none
Q17 | Liver perform the following function except:
  • Haemopoiesis in adults.
  • Formation of about half of body lymph.
  • Formation of bile salts.
  • none
Q18 | Liver functions include all the followings except:
  • Excretion of bile.
  • Glycogenolysis
  • Glycogenesis.
  • Formation of essential amino acids.
Q19 | The following statements about bile secretion are correct exept:
  • Canalicular secretion represents 75%of bile secretion.
  • Ductular secretion represents 75% of bile secretion.
  • Bile is secreted by both the hepatocytes and cholangiocytes.
  • none
Q20 | all the following statement about bile secretion are true except:
  • Bile contain cholesterol and fatty acids.
  • Hepatic bile has lower specific gravity.
  • Gall bladder bile contain less organic constituent than hepatic bile
  • none
Q21 | Gall bladder bile is characterized by all the followings except:
  • It is relatively acidic
  • Darker in color.
  • More inorganic constituent.
  • Higher specific gravity.
Q22 | The following statement about bile salts are correct except:
  • They are 2 types 1ry&2nd
  • They are Na+ and K+ salts of bile acids conjugated with glucoronic acid.
  • They are actively reabsorbed from the terminal ilium.
  • none
Q23 | All the follwings are true about bile salt except;
  • 50% of canalicular flow is dependent on bile salts in the enterohepatic circulation.
  • the amount of bill salts in stool is about 0.2-0.4gm/day
  • The total circulating pool of bile salts is 0.2-04gm
  • none
Q24 | The following are choleretics except:
  • Bile salts.
  • Secretin.
  • Acetylcholine.
  • Bile pigments
Q25 | Which of the followings has the highest pH:
  • gastric juice.
  • pancreatic juice.
  • hepatic bile.
  • succus entericus.