sebaceous gland A small gland in the skin which secretes sebum, a fatty substance that acts as a protective and water repellant layer on skin and allows the epidermis to retain its suppleness. Sebum secretion is fairly constant but varies from individual to individual. Obstructed sebaceous glands become blackheads which are the basis for acne. Related category ANATOMY AND PHYSIOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |