Enterokinase is:

(1) A hormone that prevents the secretion of gastric juice

(2) An enzyme that activates the enzyme of pancreatic juice

(3) An enzyme that activates the proteolytic enzymes of succus entericus

(4) Hormone that prevents the secretion of pancreatic juice

The sphincter of Oddi is present between:

(1) Oesophagus and cardiac stomach

(2) Pyloric stomach and duodenum

(3) Hepatic duct and cystic duct

(4) Hepatopancreatic duct and duodenum

If for some reason the parietal cells of the gastric epithelium become partially non-functional, what is likely to happen?

(1) The pancreatic enzymes and specially the trypsin and lipase will not work efficiently

(2) The pH of stomach will fall abruptly

(3) Steapsin be more effective

(4) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones

What are the tiny finger-like projections called that are inside the small intestine? These tiny finger-like projections absorb the nutrients form the food and send the vitamins, minerals, proteins, carbohydrates and fats into our bloodstream:

(1) Esophagus

(2) Arteries

(3) Villi

(4) Flagella

How is the digestion of fats different from that of proteins and carbohydrates?

(1) Fat digestion occurs in the small intestine, and the digestion of proteins and carbohydrates occurs in the stomach

(2) Fats are absorbed into the cells as fatty acids and monoglycerides but are then modified for absorption into the blood; amino acids and glucose are not modified further

(3) Fats enter the hepatic portal circulation, but digested proteins and carbohydrates enter the lymphatic system

(4) Digested fats are absorbed in the large intestine, and digested proteins and carbohydrates are absorbed in the small intestine

The initial step in the digestion of milk in infants is carried out by?

(1) Lipase

(2) Trypsin

(3) Rennin

(4) Pepsin

Assertion      :       Hepatopancreas of prawn is equivalent to the liver and pancreas of higher animals.

Reason         :       Hepatopancreas stores the absorbed nutrients from stomach and midgut.

Assertion      :       Rumen of alimentary canal of ruminant animals harbour numerous bacteria and protozoa.

Reason         :       Bacteria and protozoa help in the secretion of gastric juice in the rumen.

Assertion      :       Many tube like glands are present in the wall of small intestine.

Reason         :       These glands secrete enzymes DNAse and RNAse into the intestinal juice.

Assertion      :       Lipases of bile help in the emulsification of fats.

Reason         :       Lipases can break large fat droplets into smaller ones.