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Low Power Sagittal Section of the Lip
This is a sagittal section through the lip. To the right is skin with hair follicles (B) evident; to the left is mucous membrane with a large labial gland (A) lying just under this layer.
Starting on the right identify the following layers: 1) stratified squamous keratinized epithelium, 2) dermis (relatively dense connective tissue), 3) hypodermis, also called superficial fascia (relatively loose connective tissue), 4) skeletal muscle (orbicularis oris muscle, forms the central layer of the lip), 5) submucosa (relatively loose connective tissue; in this slide, a labial gland is seen in the submucosa), 6) lamina propria (relatively dense connective tissue), and 7) stratified squamous epithelium (not keratinized).
Legend
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A - labial gland |
4 - skeletal muscle |
