Which one of the following pairs is not correctly matched?

1. Vitamin B₁₂ - Pernicious anaemia

2. Vitamin-B₁ - Beri-beri

3. Vitamin-C - Scurvy

4. Vitamin B₂ -  Pellagra

Emulsification of fat will not occur in the absence of 

1. lipase

2. bile salts

3. bile pigments

4. pancreatic juice

Wharton's duct is associated with 

1. sub-lingual salivary duct

2. parotid salivary duct

3. sub-maxillary salivary gland

4. Brunner's glands

Which of the following is mismatched ?

1. Vitamin-K           -- Beri-beri

2. Vitamin-D           -- Rickets

3. Vitamin-C            -- Scurvy

4. Vitamin-A            -- Xerophthalmia

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

Gastric secretion is stimulated by all except

(1) Secretin

(2) Gastric distension

(3) Gastrin

(4) Vagal stimulus

The portion of human stomach into which the oesophagus opens is the:-
1. Cardiac
2. Fundus
3. Corpus
4. Pylorus

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 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