Pattern:Histology of Alimentary Canal
Description: The anatomy of human alimentary canal exhibits four layers. These are:
- Serosa: The outermost layer made up of squamous epithelium and areolar connective tissue.
- Muscularis: It is composed of outer longitudinal and inner circular muscle fibres. Muscles fibres are smooth and have a network of nerve cells.
- Submucosa: It consists of loose connective tissue richly supplied with blood and lymphatic vessels.
- Mucosa: The innermost layer lining the lumen of the alimentary canal. It has irregular foldings called rugae in the stomach and villi in the small intestine. Mucosa forms glands in the stomach (gastric glands) and crypts in between the bases of villi in the intestine (Crypts of Lieberkuhn)
Show questions to practice