ABSTRACT
A. Epidermis-the external surface of skin consisting of a keratinized epithelium. The epidermis has no vascular network. Wounds that only involve the epidermis will usually heal without scarring.
B. Dermis-the cells of the dermis are mainly fibroblasts, but white blood cells, mast cells, and tissue macrophages also reside. Elastin is an important constituent. Dermis is highly vascular and consists of two layers:
Papillary dermis-the more superficial of the two. Highly vascular, containing the subpapillary arterial, venous, and lymphatic plexuses and papillary vascular loops.
