JIPMER2005ZoologyDigestion and Absorption
In the wall of alimentary canal, what is the actual sequence from outer to inner
Options
- Aserosa, longitudinal muscle, mucosa, submucosa
- Bmucosa, serosa, long muscle
- Cserosa, long muscle, circular, submucosa, mucosa
- Dserosa, long muscle, submucosa, mucosa
Correct answer
C. serosa, long muscle, circular, submucosa, mucosa
Step-by-step solution
The wall of alimentary canal is made up of four basic layers. Ist of all there is serosa which is a thin membranous covering around oesophagus. Then there is muscle layer-outer layer of longitudinal muscles and inner layer of circular muscles. Last there is submucosa, which contains a few oesophageal glands. Then comes mucosa, which have several layers of flattened cells.