Tongue Sore Anatomy
To better understand mouth ulcers, it helps to understand the anatomy of the mouth and throat.
The back of throat is also referred to as the pharynx. More specifically, the pharynx is the back, upper part of the throat behind the tongue. It starts at the base of the tongue and ends at the larynx.
The tonsils are collections of lymphoid tissue in the back of the throat. They are located on both sides of the throat, near the base of the tongue. The tonsils generally shrink over time. At puberty, the tonsils are normally about the size of an almond.
- Bruce AJ, Rogers RS 3rd. Acute oral ulcers. Dermatol Clin. 2003 Jan;21(1):1-15. 
- Femiano F, Lanza A, Buonaiuto C, Gombos F, Nunziata M, Piccolo S, Cirillo N. Guidelines for diagnosis and management of aphthous stomatitis. Pediatr Infect Dis J. 2007 Aug;26(8):728-32. 
- Porter SR, Leao JC. Review article: oral ulcers and its relevance to systemic disorders. Aliment Pharmacol Ther. 2005 Feb 15;21(4):295-306. 
- Teo J, Codarini M. Fevers and mouth ulcers. J Paediatr Child Health. 2001 Oct;37(5):507-9.