Term
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Definition
| the growth and development of the mammary gland |
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Term
Differences btw male and femal breasts before puberty?
at puberty |
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Definition
none
at puberty F estrogen and progesteron grow breasts
M- testosterone prevents dev. |
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Term
| high levels of estrogen and progesterone cause increase |
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Definition
fat
basic milk producing and transorping unitts (alveoli and mammary ducts) |
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Term
| mammary gland develops the capacity to produce milk (lactogenesis) in response to hormonal changes. |
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Definition
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Term
| Although mammary gland has the capacity to produce milk, high levels of |
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Definition
| progesterone and estrogen inhibit actual milk production. |
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Term
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Definition
| colostrum- at end of pregnancy. caused by rise in prolactin and fall in estrogen and progesterone |
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Term
| colostrum accumulates in -- and amount |
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Definition
| 2-3mL alveoli (milk producing structure) |
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Term
| why premature baby moms don't have big supply- |
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Definition
| (<32 weeks) may have difficulties establishing/maintaining a milk supply (mammary gland not reached milk producing capacity |
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Term
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Definition
milk producing glandular cells (lactocytes)
contractile myopeithelial cells |
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Term
| 3 structures within breast related to lactation |
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Definition
alveoli
mammary ducts
nipple |
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Term
| The inner, hollow cavity of the alveolus is |
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Definition
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Term
| The lactocytes release -- into the -- and milk is released from the lumen into -- |
|
Definition
milk componenets into lumen
milk duct |
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Term
| When the myoepithelial cells that surround the alveoli contract, |
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Definition
| milk is forced out of the aveoli lumen and into the mammary ducts that lead towards the nipple. |
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Term
| two hormones released from -- needed for breast feeding and ejection |
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Definition
pituitary
prolactin oxytocin |
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Term
|
Definition
| stim. lactocytes to synthesize milk |
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Term
|
Definition
| myopepitheilial cells contract and ejects milk |
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Term
|
Definition
stim nerves by nipple sending signal to hypothalams to stop release prolactin inhibitory factor= causing more prolactin to stimulate more milk synthesis
also hypothalamus signals posterior pituitary gland to relase oxytocin |
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Term
|
Definition
| milk leaves alveolus lumen and into milk ducts caused by oxytocin squeezeing |
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Term
| psychological factors can also stimulate/inhibit the release of |
|
Definition
oxytocin-
thinking about nursing, crying= causes leakage
stress, lack of sleep, anxiety- inhibit let down |
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Term
| colostrum continues to be produced thru- |
|
Definition
| early days of breast feeding |
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Term
|
Definition
thick yellow
high protein, immunoglobulins (gut against infection, bacteria)
low volume |
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Term
| Because small amounts of colostrum may not be enough to satisfy hunger, newborns may suckle -- times in 24hrs causing- |
|
Definition
12-18 times
This helps establish milk supply, suckling=prolactin=synthesis |
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Term
|
Definition
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Term
|
Definition
significant increase milk production as a result of extensive suckling.)
heavy breasts, leakage |
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Term
| The amount of milk produced is determined primarily by |
|
Definition
| how much milk the infant consumes. |
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Term
| Residual milk remaining in alveoli lumen (poor nursing technique or infrequent nursing) |
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Definition
| down regulates milk production. |
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