Muscularis layer of the wall of the alimentary canal is formed by:-

1. Smooth muscle arranged into an inner longitudinal and an outer circular layer

2. Smooth muscle arranged into an inner circular and an outer longitudinal layer

3. Skeletal muscle arranged into an inner longitudinal and an outer circular layer

4. Skeletal muscle arranged into an inner circular and an outer longitudinal layer

The structural and functional units of the human liver are:-
1. Glisson capsules
2. Hepatic lobes
3. Hepatic Iobules
4. Hepatic sinusoids

The optimum pH for the enzyme salivary amylase is:

(1) 4.5

(2) 6.8

(3) 7.3

(4) 8.2

Intrinsic factor is secreted by the_cells of the human stomach.

1. Mucus neck cells
2. Chief cells
3. Oxyntic cells
4. G-cells

Lipases can be activated by: 

1. Enterokinase

2. Enterogastrone

3. Chyme

4. Bile

Which of the following is a sub-mucosal gland ?

(1) Oxyntic glands of stomach

(2) Crypts of Lieberkuhn of small intestine

(3) Brunner's glands of the duodenum

(4) Goblet cells

To move into the intestinal mucosa, fatty acids and glycerol are first incorporated into:

(1) Chyle

(2) Micelles

(3) Chylomicroms

(4) Lipoproteins

A mass peristaltic movement is responsible for:-

1. Release of bile and pancreatic juice into the duodenum
2. Passage of chyme from stomach to duodenum
3. Vomiting
4. Defecation

What prevents the back flow of the fecal matter into the small intestine?

1. Ileo-caecal valve

2. Sphincter of Boyden

3. Meckel's diverticulum

4. Plicae semilunaris

Many of the pancreatic enzymes must be activated by trypsin before they can begin digesting food. but trypsin itself requires the activating effect of :-

1. chymotrypsin

2. carboxypeptidase

3. phospholipase

4. enterokinase