Apocrine glands are a type of gland that belongs to the larger family of exocrine glands. They are primarily found in specific areas of the body such as the axilla (armpits), the areola of the nipple, and the anogenital region. These glands are associated with hair follicles and are responsible for producing a thick, milky secretion that becomes mixed with bacteria on the skin's surface, leading to body odor.