Breast Anatomy & Histology

The breast is split up into 15-20 separate sections known as the breast [blank_start]lobules[blank_end]

The connective tissue structures which act to support the breast's fatty tissue are known as [blank_start]suspensory[blank_end] ligaments

Which of the following describes the functional unit of secretory breast tissue?

The structures by which the Terminal Duct Lobular Units drain into in order to deliver milk to the nipple are known as [blank_start]Lactiferous[blank_end] Ducts

Label the intra and extralobular ducts shown on the histology slide

Which type of tissue is labelled on the below diagram? _________ Tissue

The cells labelled on the below slide surround the secretory cells of the Terminal Duct Lobular Unit. What are they called? [blank_start]Myoepithelial[blank_end] Cells

Which cells, present in the secretory lobules of the breast, facilitate contraction thus aiding milk excretion? [blank_start]Myoepithelial[blank_end] cells

Which Immunoglobulin is found in the highest concentration in breastmilk?

Which immunoglobulin is most commonly found in the blood?

The nipple has a core of which two tissues mainly?

Near the surface of the skin the lactiferous ducts are lined by [blank_start]stratified squamous[blank_end] epithelium, however deeper it is lined by [blank_start]stratified cuboidal[blank_end] epithelium.

Match the changes to the stage they occur in pregnancy: [blank_start]Second Trimester[blank_end] - Plasma cells and lymphocytes infiltrate the nearby connective tissue [blank_start]First Trimester[blank_end] - Proliferation of the myoepithelial cells and epithelial cells of the glands [blank_start]Third Trimester[blank_end] - Development of extensive rough endoplasmic reticulum

During pregnancy there is a drastic [blank_start]decrease[blank_end] in the adipose tissue content of the breast

During pregnancy there is a drastic [blank_start]decrease[blank_end] in the connective tissue content of the breast

[blank_start]Apocrine[blank_end] secretion = Droplets are secreted surrounded by membrane and carrying a small amount of cytoplasm with it. [blank_start]Merocrine[blank_end] secretion = Substances secreted in vesicles which merge with the apical membrane to release only their contents into the ductal system.

[blank_start]Merocrine[blank_end] secretion is also known as exocytosis

Breast milk is approximately 88% [blank_start]water[blank_end]

The proteins secreted into the breast milk are forged in the [blank_start]rough[blank_end] endoplasmic reticulum

The proteins secreted into breast milk are folded, packaged, etc by which cellular structure? The [blank_start]Golgi Apparatus[blank_end]

Which type of secretion is responsible for the release of protein and lipid into the breast milk? Protein = [blank_start]Merocrine secretion[blank_end] Lipid = [blank_start]Apocrine secretion[blank_end]

Which of the following sites of the breast is most commonly affected by breast cancer?

How many lactiferous ducts supply each breast lobule?

During pregnancy, the terminal duct lobular units [blank_start]increase[blank_end] in size.