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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.