Breast Anatomy
What is the dark pink, brownish circular area of skin that surrounds the nipple?
What is areola
When does Lactogenesis I start?
Begins middle to late-pregnancy and ends 36-96 hours postpartum.
fat and glandular tissue
When does lactogenesis II start?
36-96 hours after childbirth
Role of the mammary glands
produces milk inside the breast
what hormone(s) levels suddenly fall after the placenta is delivered and trigger lactogenesis II.
progesterone and estrogen
Raised area at the center of the areola (dark area around the nipple) where the milk ducts exit the breast.
Nipple
A maternal hormone which causes letdown. It sends messages to cells in the alveoli and causes the breast milk to be released into the ducts.
Oxytocin
Tubular structures that direct breast milk flow from the alveoli out through the nipple.
ducts
Skin-to-skin contact within the first hour of birth promotes the release of _____ and _____ needed for lactogenesis II
prolactin and oxytocin