Structure and Function of Skin, Hair, and Nails

May 2009 in “ Medicine ”

Joey E. Lai‐Cheong, John A. McGrath

epidermis hair follicles sebaceous glands dermis collagen elastic fibers psoriasis eczema urticaria melanoma

TLDR Understanding skin structure and function is crucial due to its role in health and prevalence of many skin diseases.

The document discussed the structure and function of the skin, highlighting its role as the largest organ of the human body composed of a multilayered stratified epidermis, hair follicles, sweat and sebaceous glands, and a dermis with collagen and elastic fibers. It emphasized the importance of understanding skin biology and pathophysiology due to the prevalence of over 1,000 skin diseases, which account for up to 20% of general practitioner referrals. Conditions like psoriasis, eczema, urticaria, and melanoma were noted for their significant impact on healthcare resources and patient quality of life.

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