In man the zymogen or chief cells are mainly found in 

1. cardiac part of stomach

2. pyloric part of stomach

3. duodenum

4. fundic part of stomach

Which part of body secretes the hormone secretin ?

1. Oesophagus

2. Duodenum

3. Stomach

4. lleum

The layer of cells that secret enamel of tooth is: 

1. dentoblast

2. ameloblast

3. osteoblast

4. odontoblast

The contraction of gall bladder is due to

1. gastrin

2. secretin

3. cholecystokinin

4. enterogasterone

Brunner's glands occur in

1. sub-mucosa of duodenum

2. sub-mucosa of stomach

3. mucosa of oesophagus

4. mucosa of ileum

Duodenum has characteristic Brunner's glands which secret two hormones called 

1. kinase, estrogen

2. secretin, cholecystokinin

3. prolactin, parathromone

4. estradion, progesterone

Pancreas produces 

1. three digestive enzymes and one hormone

2. three digestive enzymes and two hormones

3. two digestive enzymes and one hormone

4. three digestive enzymes and no hormone

Secretin and cholecystokinin are digestive hormones. They are secreted in

1. oesophagus

2. ileum

3. duodenum

4. pyloric stomach

Carrier proteins faciliate the absorption of substance like

1. amino acids and glucose

2. glucose and fatty acids

3. fatty acids and glycerol

4. fructose and some amino acids

The vitamin-C or ascorbic acid prevents 

1. rickets

2. pellagra

3. scurvy

4. antibody synthesis