Digestion And absorption

Chylomicrons are concerned with :-

• digestion of fats

• absorption of proteins

• digestion of protein

• absorption of fats

Which of the following statement is incorrect?

• Faecal accumulation in the rectum initiates a neural reflex causing an urge for its removal.

• Reflex action for vomiting is controlled by medulla.

• Irregular bowel movements causes constipation

• In diarrhoea the absorption of food get enhanced

Which of the following statement is incorrect?

I. Absorption of simple sugar, alcohol, some water and medicines takes place in stomach.

II. Maximum water absorption occurs in small intestine.

III. Small intestine is the major site of digestion and absorption of food.

IV. Fatty acid and glycerol are absorbed by lacteals.

V. Nothing is absorbed in mouth and large intestine.

• I, IV and V

• V

• IV

• II and III

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

Which of the following statement is false ?

• The break down of most of biomacromolecules occurs in duodenum

• Simple substances (digested foods) are absorbed in the jejunum and ileum.

• Very significant digestive acitivity occurs in large intestine.

• Undigested and unabsorbed substances are passed into the large intestine.

Enterokinase is :-

• Pancreatic hormone

• Intestinal hormone

• Pancreatic enzyme

• Component of intestinal juice

The juice having maltase, dipeptidase, lipase, nucleotidase, nucleosidase etc is called :-

• Pancreatic juice

• Gastric juice

• Intestinal juice / Succus entericus

• Bile