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digestive tract/tube; alimentary canal/tube
The passage leading from the mouth to the anus through the pharynx, esophagus, stomach & intestine. 4 tunics in wall of digestive tube.
1) Tunica mucosa
2) Tunica submucosa - areolar connective tissue that contains blood & lymphatic vessels, nerves & glands.
3) Tunica muscularis
4) Tunic serosa or adventitia - outer layer of connective tissue
General
digestive system
References
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999.
- Human Anatomy and Physiology, Alexander P Spence &
Elliot B. Mason, The Benjamin/Cummings Publishing
Company, Inc, 1979.