1
Q
E c t o d e r m a l s t r e a k s
d e v e l o p f r o m f e t a l
a x i l l a t o g r o i n
A
Week 4-6
2
Q
Mammary ridges develip in thoracuc region
A
Week 4-6
3
Q
Milk lines appear (region where breast tissue would potentially develop)
A
Week 4-6
4
Q
Mammary ridges involute
A
Week 6-8
5
Q
Invagination of chest wall mesenchyme
A
Week 6-8
6
Q
Differentiation of smooth muscle of nipple and areola
A
Week 12-16
7
Q
Devt of epithelial buds and bud branching
A
Week 12-16
8
Q
Devt of hair follicles, apocrine glands, and Montgomery glands
A
Week 16-20
9
Q
Appearance of primitive elements of breast parenchyma
A
Week 16-20
10
Q
Epidermis depresses into shallow mammary pit
A
3rd tri
11
Q
Nipple-areolar complex enlarges and develops pigmentation
A
3rd tri
12
Q
Main ducts canalize
A
3rd tri
13
Q
Lobules begin differentiation
A
3rd tri
312
flashcards
Decks in class (9)
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