Video stroboscopy Stroboscopic exam allows careful video evaluation of the function of the vocal tract and cords with a telescope or fiber-optic laryngoscope. Useful for identifying the reasons for hoarseness or voice dysfunction. The internal part of the nose lies just above the roof of the mouth. The external part is divided into two chambers by the septum, each chamber developing into a nostril. The septum is made up primarily of cartilage and bone covered by mucous membranes.
Cartilage also gives shape and support to the outer part of the nose.
These open into four pairs of air-filled cavities called sinuses, which are also lined with mucous membranes. The Mouth and Salivary Glands Besides the teeth, gums, and tongue, the mouth contains three pairs of salivary glands that help digestion by secreting saliva, which helps break up food and keeps the mouth wet. The larynx is crucial to speech and breathing. Above the larynx is the epiglottis, which works with the larynx and vocal cords during swallowing to push food into the esophagus and keep it from entering the windpipe. Tonsils and adenoids are lumps of lymph tissue at the back and sides of the mouth.