Digestive System Practice Questions

Q1. A gap between teeth is called:

a) Diastema b) Peristoma c) Dentosa d) Geostema

Q2. Peristalsis occurs in:

a) Stomach b) Esophagus c) Ileum d) Jejunum

Q3. Gastro-esophageal sphincter is present between:

a) Esophagus and stomach b) Stomach and duodenum

c) Duodenum and pancreas d) between duodenum and jejunum

Q4. Zymogen cells secrete:

a) Mucus b) Pepsinogen c) Pepsin d) Rennin

Q5. Which is the largest part of the intestine

a) Duodenum b) Jejunum c) Ileum d) Caecum

Q6. Which of the following is not secreted by Crypts of Leiberkuhn:

a) Lipase b) Maltase c) Aminopeptidase d) Nucleases

Q7. Myenteric nerve plexus is present in:

a) Serosa b) Muscularis c) Submucosa d) Mucosa

Q8. Auerbach’s plexus is present between:

a) Longitudinal and circular muscle

b) Submucosa and mucosa

c) Serosa and muscular is

d) Muscularis and sub mucosa

Q9. Which of the following ions are responsible for the activation of ptyalin:

a) Na+ b) Cl-      c) HCO3- d) SCN-

Q10. How much saliva is secreted per day:

a) 1000 - 1200 ml per day

b) 800 - 1000 ml per day

c) 600 - 800 ml per day

d) 900 - 1200 ml per day

Q11. Which of the following is correct about mucus:

a) It is alkaline and proteinaceous

b) It is acidic and proteinaceous

c) It is neutral and fatty in nature

d) It is neutral and proteinaceous

Q12. Intrinsic factor malsecretion may lead to:

a) Pernicious anemia

b) Rickets

c) Scurvy

d) Dermatitis

Q13, All of the following glands are present in mucosa except:

a) Oxyntic cells

b) Zymogen cells

c) Peptic cells

d) Brunner’s gland

Q14. Intestinal juice is secreted by:

a) Crypts of Leiberkuhn

b) Brunner’s gland

c) Both a and b

d) Gall bladder

Q15. Glisson’s capsule is present in:

a) Liver b) Gall bladder c) Small intesine d) Large intestine

Q16. Which of the following cells are associated with Liver:

a) Kuffer cells b) Paneth cells c) Both a and b d) Argentiffin cells

Q17. The pH of hepatic bile and gall bladder bile are:

a) 8.6 and 7.4 b) 7.4 and 8.6 c) 6.8 and 7.4 d) 7.4 and 6.8

Q18. The main pancreatic duct is also known as:

a) Duct of Wirsung   

b) Duct of Santorini  

c) Sphincter of Boyden

d) Sphincter of Oddi

Q19. The disease gall stone in the gall bladder is known as:

a) Cholethisasis

b) Cholelithiasis

c) Biliary duskiness

d) Sclerosing cholangitis

Q20. Which of the following pancreatic cells secrete pancreatic polypeptide

a) Alpha cells b) Beta cells c) Delta cells d PP cells

Q21. Pancreatic amylase is also known as:

a) Pancreatic acini b) Steapsin c) Proteolase d) Tryptase

Q22. Which of the following cells secrete somatostatin hormone responsible for inhibiting insulin and glucagon

a) Alpha cells b) Beta cells c) Delta cells d PP cells

Q23. Salivary amylase and pancreatic amylase work on pH:

a) 6.8 and 7.5 b) 6.8 and 7.0 c) 7.2 and 7.9 d) 7.2 and 6.8

Q24. Food in the buccal cavity and stomach are respectively called as:

a) Bolus and chyme b) Chyme and bolus c) Chile and bolus  d) Bolus and chile

Q25. Lingual lipase is secreted by:

a) Ebner’s gland

b) Brunner’s gland

c) G-cells

d) Paneth cells

Q26. GIP (Gastric Inhibitory hormone) is secreted by:

a) Epithelium of duodenum

b) Epithelium of stomach

c) Epithelium of Jejunum

d) Epithelium of Ileum

Q27. CCK (cholecystokinin) is responsible for the secretion of:

a) Bicarbonate ions from pancreas

b) Bile from the gall bladder

c) Mucus from the sub mucosa of duodenum

d) Pancreatic juice from the pancreas

Q28. The pH of succus entericcus is:

a) 1.8

b) 6.8

c) 7.8

d) 7.0

Q29. Absorption of water occurs through

a) Osmosis b) Secondary active transport c) Both d) None

Q30. Gross calorific value of fat is:

a) 4.6 Kcal / gm of food

b) 5.65 Kcal/ gm of food

c) 9.45 Kcal / gm of food

d) 9.1 Kcal /gm of food

Q31. Physiological calorific value of fat is:

a) 9.1 Kcal / gm of food

b) 9.45 Kcal / gm of food

c) 9.6 Kcal / gm of food

d) 8.1 Kcal / gm of food

Q32. Choose the correct statement among the following:

a) Intestinal mucosal epithelium has enzymatic cells

b) Ptylin converts protein into proteoses and peptones

c) Crypts of Leiberkuhn are seen between bases of villi in intestine

d) Sphincter of Oddi is present at the junction of esophagus and cardiac stomach

e) Goblet cells secrete hydrochloric acid in stomach

Q33. Enzyme not present in pancreatic juice is:

a) Amylase b) Chymotrypsinogen c) Lipase d) Enterokinase

Q34. The enzymes are location ‘X’ and ‘Y’ are respectively:

Proteins___X____ àProteoses + Peptones ___Y___à Dipeptide

a) Chymotrypsinogen and Pepsin

b) Pepsin and trypsin

c) Ptylin and pepsin

d) Trypsin and dipeptidase

Q35. Chilomicrons are:

a) small fat globules coated with protein

b) protein molecules coated with fat

c) small granules found in gastric juice

d) aerobic microbes

Q36 Which one does not produce any digestive enzymes:

a) Salivary glands b) Pancreas c) Gall bladder d) Stomach

Q37. Which is component of Waldeyer’s ring:

a) Pharynx b) Tonsils c) Ileum d) Esophagus

Q38. Which is not correct:

a) Human saliva is near neutral

b) An adult secretes 1.0 - 1.5 L of saliva per day

c) Saliva is secreted by six pairs of glands

d) Ptylin breaks down cooked starch into maltose

Q39. Which gastric secretion is correctly matched with its source:

a) Pepsin -- Chief cells

b) Chemotropism -- Parietal cells

c) Hcl -- goblet cells

d) Mucus -- Oxyntic cells

Q40. Which enzymes are likely to act on the baked potatoes eaten by a man, starting from mouth and as it moves down the alimentary canal:

a) Disaccharidase like maltase à Lipases à Nucleases

b) Salivary amylase à Pancreatic amylase à Diasaccharidases

c) Salivary maltase à carboxypeptidase à Trypsinogen

d) Pancreatic amylase à Salivary amylase à Lipases

Q41. Absence of enzyme in small intestine will severely affect digestion of proteins:

a) Maltase b) Lipase c) Enterokinase d) Pancreatic amylase

Q42. Which process helps in maintaining blood glucose level under fasting:

a) Glycogenesis b) Glycogenolysis c) Lipogenesis d) Glycolysis

Q43.  Aggregates of lymphoid tissue present in distal part of the small intestine are known as:

a) Villi b) Rugae c) Choroid plexus d) Payer’s patches

Q44. Back flow of faecal matter from large intestine is prevented by:

a) Epiglottis

b) Sphincter of Oddi

c) Ieocaecal valve

d) Gastro-esophageal sphincter

e) Pyloric sphincter

Q45. Special feature of  bile juice is that it

a) has no enzyme b) has amylase c) contains lipase d) contains Hcl

Q46. Bilirubin is formed by breakdown product of:

a) Haempglobin b) Haemocyanin c) Haemoprotein d) Haematin

Q47. In the absence of which of the duodenal enzyme, digestion of chyme proteins not possible:

a) Dil HCl b) Enterokinase c) Gastrin d) All of the above

Q48. Common passage for bile and pancreatic juice is:

a) Ampulla of Vater

b) Duct of Wirsung  

c) Ductus coledochus

d) Duct of Santorini

Q49. Which pair reaches the stomach totally undigested:

a) Fat, cellulose b) Starch, cellulose c) Protein, starch d) Starch, fat

Q50. Which is not a gastrointestinal hormone:

a) CCK b) Gastrin c) Secretin d) Cortisol

ANSWER KEY:

1. a                           11. a                             21. b                               31. a                          41. c

2. b                           12. a                             22. c                               32. c                          42. b

3. a                           13. d                             23. a                               33. d                          43. d

4. b                           14. c                             24. a                               34. b                          44. c

5. c                           15. a                             25. a                               35. a                           45. a

6. c                           16. a                             26. a                               36. c                           46. a

7. b                           17. a                             27. b                               37. b                           47. b

8. a                           18. a                             28. c                               38. c                            48. a

9. b                           19. b                            29. a                               39. a                            49. a

10. a                         20. d                            30. c                               40. b                            50. d