Читать книгу Applied Oral Physiology - Robin Wilding - Страница 42

The lining mucosa covers the cheeks, vestibular sulcus, inner surface of the lips, floor of the mouth, and undersurface of the tongue. Most of the lining mucosa lies directly over muscle, and so there is little space for any submucosa. Where the submucosa is more substantial, there are minor salivary glands, vessels, and nerves. The lining mucosa of the floor of the mouth is particularly thin. It provides a useful route of entry for some drugs. Patients who suffer from angina (heart pain) may get relief by placing a tablet of nitroglycerine under the tongue. Recall that it is common practice to place a thermometer under the tongue as it is in close contact with blood vessels.