Module 3 Flashcards
basic unit of glandular tissue
alveoli
milk-secreting unit
alveolus
cells that surround alveolus and contract to milk eject
myoepithelial cells
collection of one primary duct and its ductules/aveoli. 15-20 per breast.
lobe
where 10-15 ducts congregate
nipple
growth of nipples causing them to be more erect during pregnancy is caused by serum ________
prolactin
diameter of areola increased by ___%
40
lobes, lobules, and alveoli increase in size due to:
progesterone
ductules proliferate and differentiate due to:
estrogen
prolactin stimulation of mammary secretory epithelial cells to produce milk after ____ weeks gestation
16
occurs when prolactin stimulates mammary secretory epithelial cells to produce milk and alveoli become distended and milk droplets move to ductules
Lactogenesis Stage I
occurs on day 2-8 postpartum as a result of placenta delivery in which the breasts produce copious amounts of milk (delays may be caused by disruption of hormone cascade)
Lactogenesis Stage II
hormone released from posterior pituitary by newborn suckling that:
Causes uterine contractions
Causes contraction of myoepithelial cells to eject milk from alveoli into ducts
Results in a feeling of calm
oxytocin
oxytocin is released by the:
posterior pituitary
Maternal ________ reduces oxytocin release
stress
hormone released from anterior pituitary gland that causes milk synthesis
prolactin
hormone that is inhibited by progesterone, estrogen, and dopamine
prolactin
With milk removal, hypothalamus inhibits ________
dopamine
Nipple stimulation doubles plasma concentration of:
prolactin
Greater than 8 feedings/24 hrs prevents ___________ decline
prolactin
prolactin levels are higher at _____time
night
The Maintenance of Milk Supply that is completely baby driven (autocrine) NOT hormone driven (endocrine)
Galactopoesis
Rate of milk synthesis mL/hr
17-33 mL/hour
slower milk synthesis rates will occur when breasts are _______
full
Breastmilk is ____% water
87.5%
Breastmilk has Vitamins ___ ____ ____
A, C, E