Breastfeeding Physiology Flashcards
what is the role of ducts in the breast
they are thin tubes that carry milk from the lobules to the nipple
in what part of the breast is milk produced
the lobules, inside the lobes(15-20 of them)
what type of tissue are the breast lobules and ducts
glandular
how are lobules arranged inside the lobes
in clusters, like grapes
describe the process by which milk is moved from the lobules to the ducts
myo-epithelial/muscle cells surrounding the lobules contract and squeeze the milk out of the lobule into the duct
what are the lobules made up of
lots of lactocytes surrounded by myo-epithelial cells
where are the prolactin receptor sites found in the lobules
on the cell wall of each lactocyte
describe the role of prolactin in breastfeeding
prolactin circulates in blood, levels rise in response to touch/suckling by baby, more circulating prolactin, more lactocytes activated = more milk produced
what is the 1st stage of lactogenesis
breast development and colostrum production from approx. 16 weeks
what is the 2nd stage of lactogenesis
onset of copious milk secretion occurring between 32 and 96 hours after birth
what is the 3rd stage of lactogenesis
maintenance of milk production
what is the role of progesterone in breastfeeding
inhibits milk production by inhibiting prolactin
what is the role of oxytocin in breastfeeding
responsible for milk delivery, acts on muscle cells in a pulsatile action, levels higher when baby is near
what are the CHIN principles of positioning the baby when breastfeeding
Close, Head free, In line, Nose to nipple
CHIN
what are signs of ineffective feeding for the mother
sore nipples, engorgement, mastitis, low milk production
