<Tr> <Th> FMA </Th> <Td> 59160 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> Sebaceous glands are microscopic exocrine glands in the skin that secrete an oily or waxy matter, called sebum, to lubricate and waterproof the skin and hair of mammals . In humans, they occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of the hands and soles of the feet . The type of secretion of the sebaceous glands is referred to as holocrine . In the eyelids, meibomian glands, also called tarsal glands, are a type of sebaceous gland that secrete a special type of sebum into tears . Fordyce spots are ectopic (misplaced) sebaceous glands found usually on the lips, gums and inner cheeks, and genitals . Areolar glands surround the female nipples . </P> <P> Several related medical conditions involve sebum--including acne, sebaceous cysts, hyperplasia, and sebaceous adenoma . These are usually attributable to overactive sebaceous glands, which produce excess sebum . </P>

Which glands secrete the oily substance that lubricates the skin