Mammary Gland At Biology Glossary

What is it? A gland present in female mammals that produces milk used to suckle the young. It probably evolved from a modified sweat gland and at least two are normally present, although in many mammals more than two are developed, usually concentrated on the underbelly beneath the pelvic girdle. In most mammals the size of the gland is determined by the state of the estrous cycle.

Bio Definition Added By: Audrey

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