A mammary alveolus is a small cavity or sac found in the mammary gland. Mammary alveoli are the site of milk production and storage in the mammary gland. Mammary alveoli cluster into groups called lobules, and each breast may .
A mammary gland is an exocrine gland in humans and other mammals that produces milk to feed young offspring. Mammals get their name from the Latin word mamma, "breast". The basic components of a mature mammary gland are the alveoli (hollow cavities, a few millimeters large) lined with milk-secreting cuboidal.
Breast milk is produced by the mammary alveolar cells of the breast after childbirth. The mammary gland is a highly evolved skin gland, and its rudiments are first.
These hormones activate the alveolar switch, a genetic program that morphogenesis, using the mouse as a model of the human breast .