Sebaceous gland the hair shaft. The structure consisting of hair, hair follicle, arrector pili muscles, and sebaceous gland is an epidermal invagination known as a "pilosebaceous unit". Sebaceous glands are also found in hairless areas (glabrous skin) of the eyelids, nose, penis, labia minora, the inner mucosal membrane of the cheek, and nipples. Some sebaceous glands have unique names. Sebaceous glands on the lip and mucosa of the cheek, and on the genitalia, are known as Fordyce spots, and glands on the eyelids are known as meibomian glands. Sebaceous glands of the breast are also known as Montgomery's glands. Sebaceous glands are
An Essay on the Inequality of the Human Races An Essay on the Inequality of the Human Races Essai sur l'inégalité des races humaines (Essay on the Inequality of the Human Races, 1853–1855) is the infamous work of French writer Joseph Arthur, Comte de Gobineau, which argues that there are differences between human races, that civilizations decline and fall when the races are mixed and that the white race is superior. It is today considered to be one of the earliest examples of scientific racism. Expanding upon Boulainvilliers' use of ethnography to defend the Ancien Régime against the claims of the Third Estate, Gobineau aimed for an explanatory system