Q147 / 160 · JIPMER 2005 · Zoology

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

  • A
    serosa, longitudinal muscle, mucosa, submucosa
  • B
    mucosa, serosa, long muscle
  • Correct answer
    C
    serosa, long muscle, circular, submucosa, mucosa
  • D
    serosa, long muscle, submucosa, mucosa

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.

Hence, the correct answer is option: 'C'.

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