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NEET2005ZoologyDigestion and AbsorptionActual

In the wall of alimentary canal, what is the actual sequence from outer to inner

Options

  1. Aserosa, longitudinal muscle, mucosa, submucosa
  2. Bmucosa, serosa, long muscle
  3. Cserosa, long muscle, circular, submucosa, mucosa
  4. 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.

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