Gastrointestinal system (Physiology practice multiple choice questions for FCPS, MRCP, USMLE, and PLAB)

GIT MCQs

1) Which of the following are incorrectly paired

a. pancreatic alpha amylase-starch          

b. elastase-tissue rich in elastin

c. renin-coagulated milk               

d. erythropeptidase-polypeptides

Ans. d

2) All are GIT hormones except

a. cholecystokinin           

b. gastrin

c. secretin          

d. erythropoietin

Ans. d

3) Iron is absorbed in

a. stomach         

b. duodenum

c. jejunum         

d. ileum

Ans. b

4) In infants, defecation often follows a meal. The cause of colonic contractions in this situation is

a. gastro-ileal reflex       

b. increased circulating levels of CCK

c. gastrocolic reflex        

d. enterogastric reflex

Ans. c

5) Which of the following has highest ph

a. gastric juice   

b.  pancreatic juice

c. bile in GB        

d. secretions of intestinal glands

Ans. b

6) Man is unable to digest

a. dextrin            

b. glucose

c. cellulose         

d. glycogen

Ans. c

7) Steatorrhoea may be caused by all factors except

a. pancreatectomy         

b. gastrin secreting hormone

c. resection of distal ileum          

d. hemolytic jaundice

Ans. d

8) Normal swallowing is dependant on the integrity of the

a. 9th and 10th cranial nerves    

b.  pyramidal tract

c. trigeminal nerve         

d. appetite center of hypothalamus

Ans. a

9) Secretion of intrinsic factor occurs in

a. parietal cells of stomach          

b. chief cells of stomach

c. upper abdomen          

d. alpha cells of pancreas

Ans. b

10) In which of the following is absorption of water greatest

a. colon               

b. jejunum

c. duodenum    

d. stomach

Ans. b

11) Secretin is released by

a. acid in duodenum      

b. acid in stomach

c. cells in the liver            

d. distention of colon

Ans. a

12) Which of the following would not be produced by total pancreatectomy

a. hyperglycaemia          

b. metabolic acidosis

c. weight gain   

d.  decreased absorption of amino acids

Ans. c

13)  Vit D is essential for normal

a. fat absorption              

b. Ca absorption

c. ADH secretion              

d. protein absorption

Ans. b

14) Gastrin secretion is increased by

a. acid in the lumen of stomach

b. distension of stomach

c. increased circulating levels of secretin              

d. vagotomy

Ans. b

15) Saliva is responsible for all EXCEPT

a. helps in deglutition    

b. prevents dental caries

c. is essential for complete digestion of starch   

d. prevents decalcification of the teeth

Ans. c