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Apex of the Lip (sagittal section)
This image illustrates the junction of the mucous membrane of the oral cavity with the skin of the lip (A). Skin is to the right (B) and is composed of the epidermis (epithelial layer) and the dermis (dense connective tissue layer). Mucosa (C) on the left, is composed of epithelium and lamina propria (dense connective tissue layer). At the mucocutaneous junction (A) the epithelium of the mucosa is continuous with that of the skin and the lamina propria is continuous with the dermis. Deep to the lamina propria, the submucosa is the counterpart to the hypodermis of the integument.
Legend
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A - mucocutaneous junction |
C - labial mucosa |
