The intrinsic factor that helps in the absorption of vitamin ${\mathrm{B}}_{12}$ is secreted by:

1. Goblet cells

2. Hepatic cells

3. Oxyntic cells

4. Chief cells

The proteolytic enzyme rennin is found in:

1. Intestinal juice

2. Bile juice

3. Gastric juice

4. Pancreatic juice

Succus entericus is referred to as:

1. Gastric juice

2. Chyme

3. Pancreatic juice

4. Intestinal juice

Sphincter of Oddi is present at :
1. Gastro-oesophageal junction
2. Junction of jejunum and duodenum
3. Ileo-caecal junction
4. Junction of hepato-pancreatic duct and duodenum

Thecodont, diphyodont and heterodont teeth are the characteristic of

1. Reptiles

2. Aves

3. Amphibians

4. Mammals

Pyloric sphincter regulates the opening of

1. Pharynx into oesophagus

2. Oesophagus into stomach

3. Stomach into duodenum

4. lleum into large intestine

In which layer of stomach are the gastric glands located?

1. Serosa

2. Mucosa

3. Submucosa

4. Muscularis mucosa

Brush border columnar epithelium is the lining of

1. Stomach

2. Oesophagus

3. Proximal convoluted tubules

4. Small intestine

Which of the following statement is incorrect with respect to histology of alimentary canal?

1. Serosa is the outermost layer made up of a thin mesothelium with some connective tissue

2. Muscularis layer is formed by smooth muscles usually arranged into an inner longitudinal layer and circular layer

3. Submucosal layer is formed of loose connective tissue

4. An oblique muscle layer may be present in stomach

The wall of alimentary canal from oesophagus to rectum possesses _____ layers.

1. 2 layers

2. 3 layers

3. 4 layers

4. 5 layers