Mammary glands are specialized organs in mammals that produce milk to nourish their young. They are a key characteristic distinguishing mammals from other vertebrates.
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Mammary glands are present in both males and females, though they are typically functional only in females.
They produce milk through a process called lactation, which is controlled by hormonal changes following childbirth.
Mammary glands consist of lobes and lobules connected by ducts that transport milk to the nipple.
These glands evolved from sweat glands and are modified apocrine glands.
The development and function of mammary glands are influenced by hormones such as estrogen, progesterone, prolactin, and oxytocin.
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Related terms
Lactation: The secretion of milk by the mammary glands, typically occurring after childbirth.