Lactiferous sinus

Definition

The lactiferous sinus is an expanded region of the mammary gland ducts where breast milk accumulates before exiting through the nipple. It acts as a reservoir allowing milk to be stored temporarily during breastfeeding.

Related terms

Mammary Gland: A specialized organ in mammals that produces milk to feed young offspring.

Nipple:

The protruding part on the breasts through which milk is delivered from the lactiferous ducts to the outside.

Lactation: The process of producing and secreting milk from the mammary glands to feed infants