OverviewThe mouth is the origination of the digestive tract. The teeth and salivary glands aid in breaking down food for digestion. The tonsils aid against infections.
Update Date 10/30/2015
Updated by: Sumana Jothi, MD, specialist in laryngology, Clinical Instructor UCSF Otolaryngology, NCHCS VA, SFVA, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.