Physiology MCQs

Page No. 52

Peristalsis in the gut is due to ______________?


aPreperistalitic intestinal secretion


bMecharical distension


cSimultaneous action of circular and longitudinal muscles


dExtrinsic nervous influence


View Answer Mecharical distension

Secretin is secreted by_____________?


aDuodenum


bPancreas


cLiver


dStomach


View Answer Duodenum

Of the following is a reflex mediated by vagus ?


aBile flow from liver


bPancreatic secretion of bicarbonate


cCephalic phase of gastric secretion


dMucous secretion from the Brunner’s glands



which of the following secretions has a very high pH________________?


aGastric juice


bPancreatic juice


cBile in gall bladder


dSaliva


View Answer Pancreatic juice

Trypsin is an activator of all of the following enzymes EXCEPT_______________?


aChymotrypsinogen


bPepsinogen


cProelastase


dProcolipase


View Answer Pepsinogen

The most important action of Secretin is to_____________?


aneutralize the acid from the stomach


bincrease secretion of bicarbonates by pancreas


cdecrease gastric secretion


dCause contraction of pyloric sphincter



Which is not produced enteroendocrinally_____________?


aIntrinsic factor


bSecretin


cMotilin


dGIP


View Answer Intrinsic factor

Peristalsis involves coordinated contraction and relaxation______________?


aAbove and below the food bolus


bLateral and medial to food bolus


cDorsal and ventral to food bolus


dNone of the above



The intrinsic factor for vitamins B12 absorption is produced in the______________?


aLiver


bStomach


cPancreas


dDuodenum


View Answer Stomach

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