Mammary glands

Definition

Mammary glands are specialized organs in mammals that produce milk to nourish their young. They are a key characteristic distinguishing mammals from other vertebrates.

5 Must Know Facts For Your Next Test

1. Mammary glands are present in both males and females, though they are typically functional only in females.
2. They produce milk through a process called lactation, which is controlled by hormonal changes following childbirth.
3. Mammary glands consist of lobes and lobules connected by ducts that transport milk to the nipple.
4. These glands evolved from sweat glands and are modified apocrine glands.
5. The development and function of mammary glands are influenced by hormones such as estrogen, progesterone, prolactin, and oxytocin.

Review Questions

• What is the primary function of mammary glands?
• How do mammary glands differ between male and female mammals?
• What hormones play a significant role in the development and function of mammary glands?

Related terms

Lactation: The secretion of milk by the mammary glands, typically occurring after childbirth.

Estrogen:

A hormone that promotes the development and maintenance of female characteristics in the body.

Oxytocin: A hormone involved in childbirth and lactation, promoting uterine contractions during labor and milk ejection during breastfeeding.