Normal throat and tonsils. The inside of amouth, showing a healthy throat (pharynx) andtonsils. At bottom is the tongue. The fleshyprotruberance hanging at the back of the mouth isthe uvula, an extension of the soft palate. Thetonsils are the two clumps of tissue on eitherside of the uvula, just above the tongue. The backwall of the phar- ynx can be seen behind the tipof the uvula. The tonsils contain white bloodcells that help to fight infections of the throatand upper respiratory tract. Doctors frequentlyexamine the pharynx and tonsils to investigate thecause of sore throat (pharyngitis).