Assertion Reason Test: Digestion & Absorption - NEET MCQ

A: In humans, the duct of wirsung from pancreas combines with bile duct before opening into duodenum.

R: Blockage in the duct of Wirsung will prevent the endocrine function of pancreas.

A: In acute constipation, purgatives containing magnesium salts are generally used.

R: The osmotic effect of Mg2+ in the intestinal lumen prevents water reabsorption from the intestine. Mg2+ increases the solute concentration in the intestinal lumen because Mg2+ is absorbed very slowly.

A: Liver assists in the digestion of fat.

R: Hepatic secretion contains bile salts which emulsify fat

A: Vomiting is the forcible expulsion of the contents of the upper gastrointestinal tract through the mouth.

R: The strongest stimuli for vomiting are irritation and distension of the stomach.

A: Gastric emptying is slowest after a fat-laden meal containing a large number of triglycerides.

R: Fatty acids in chyme stimulate the release of both CCK and GIP, which slow stomach emptying.

A: Trypsin is secreted in pancreatic juice as trypsinogen.

R: Zymogenic forms protect the pancreas from autodigestion.

A: Trypsin is an example of endopeptidase and is present in the pancreatic juice.

R: Trypsin acts on the interior peptide of a protein molecule.