ANSWERS (VERIFIED) | LATEST
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What week gestation does the breast begin to develop in
utero?
Correct Answer: *4th* week of gestation
Where does the primitive milk streak develop
Correct Answer: Bilaterally from the axilla to the groin
By the 5th week gestation the milk streak becomes what?
Correct Answer: Mammary Milk Ridge (or milk line)
,Thickening and inward growth into the chest wall continues
during what weeks gestation?
Correct Answer: *7-8* weeks gestation
Between weeks 12 and 16 gestation specialized cells
differentiate into what?
Correct Answer: Smooth muscles of the nipple and areola
What forms the mammary pit?
Correct Answer: Lactiferous ducts and their branches
open into a shallow epithelial depression
What failure creates an inverted nipple?
Correct Answer: When the Mammary pit fails to elevate
What is witches milk?
,Correct Answer: After birth, a neonate's mammary tissue
(under the influence of maternal hormones) might recreate
colostral like fluid
At what age do the primary and secondary ducts grow and
divide and form the terminal end buds that become the
alveoli?
Correct Answer: 10-12 years old (puberty)
When does *complete* development of mammary function
occur?
Correct Answer: During pregnancy
What is superficial fiscia?
Correct Answer: Fibrous tissue beneath the skin
Where is the breast located?
, Correct Answer: In the superficial fascia between the
*2nd rib and 6th ICS*
What are the two major divisions of the breast?
Correct Answer: Parenchyma and Stroma
What makes up the Parenchyma?
Correct Answer: Ducts, lobes, and aveoli
What are alveoli?
Correct Answer: Small sacs where milk is secreted
What makes up the Stroma?
Correct Answer: Connective and fat tissue, blood vessels,
nerves, and lymphatics.