Roof of oral cavity. The hard palate, which contains bone, is bisected into right and left halves by a raphe. Anteriorly, in the fatty zone, the submucosa of the hard palate contains adipose tissue; posteriorly, in the glandular zone, there are mucous glands within the submucosa. Neither the raphe nor the gingiva contains a submucosa; instead, the mucosa is attached directly to the bone. The soft palate has muscle instead of bone, and its glands are continuous with those of the hard palate in the submucosa. (Based on Bhaskar SN, ed. Orban's Oral Histology and Embryology. St. Louis: CV Mosby, 1991.)
keratinized epithelium N
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