Breast Histology Flashcards Preview

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Flashcards in Breast Histology Deck (10):
1

What makes up the secretory tissue of the breast?

15-20 lobes, each consisting of tubuloacinar glands that drain via ducts to the nipple

2

What tissues make up the non-lactating breast?

Fibrous and adipose tissue

3

Describe the duct system in the breast

Terminal ductules lead into intralobular collecting ducts that lead into the lactiferous duct for that lobe
The lactiferous duct leads to the nipple

4

How does the epithelium differ between large ducts and secretory acini?

Large ducts: columnar
Secretory acini: cuboidal

5

What type of epithelium lines the nipple?

Highly pigmented keratinized stratified squamous epithelium

6

Describe the changes that occur in the breast during the menstrual cycle

Epithelial cells increase in height
Lumina of ducts become enlarged
Small secretions appear

7

Describe the changes that occur in the breast if pregnancy occurs

Elongation and branching of smaller ducts
Glandular tissue development
Secretory alveoli mature

8

What effect do oestrogen and progesterone have on secretory and adipose tissue?

Stimulate proliferation of secretory tissue
Fibro-fatty tissue becomes sparse

9

By what mechanism of secretion are lipid droplets of milk secreted?

Apocrine secretion: droplet buds off with a little bit of cytoplasm with it

10

By what mechanism of secretion are proteins of milk secreted?

Merocrine secretion: vesicle containing packaged protein releases all of its contents