Paraquad - Facts on Skin Cancer Facts on Skin Cancer from the brochure of the same name by the American Cancer Society Cancer of the skin is the most common of all cancers. About 700,000 cases of skin cancer occur in this country each year. Skin cancer most often occurs among older, fair-skinned people and is rare among black people.
Most skin cancers are either basal cell or squamous cell type.
The Functions and Structure of the Skin A group of body tissues with special functions, the skin is actually the largest organ of the body. As a covering or barrier, the skin protects structures underneath from injury, blocks the entrance of bacteria, and prevents the loss of too much water or other fluids. The skin also regulates body temperature, helps rid the body of excess water and salts, and serves as a sense organ for touch, pressure, cold, heat, and pain. In performing its functions, the skin is helped by the hair, nerves, and glands within it. The skin has three main layers.