Superficial Structures - Part 2 Flashcards
What is the TDLU formed by? (2)
- Acini
2. Terminal duct
What join to form a breast lobe?
Several TDLU
What is the origin of nearly all breast pathology?
TDLU
What should the diameter of the TDLU not exceed?
2mm
What duct is contained in each breast?
The lactiferous duct
Where does the lactiferous duct course?
Towards the nipple
Where does the lactiferous duct enlarge?
At the areola
What is lactiferous duct lined with?
Epithelial cells
What should the diameter of the lactiferous duct never exceed?
3mm
What are the layers of skin of the breast composed of? (2)
- Epidermis
2. Dermis
What is the thicken of the skin of the breast?
2-3mm
What is the subcutaneous fat layer also known as?
Pre-mammary layer
What is the subcutaneous fat layer composed of? (2)
- Fat
2. Connective tissues
Where is the subcutaneous fat layer located?
Between the skin and the mammary zone
What does the subcutaneous fat layer contain?
Cooper ligaments diverse
Coopers ligaments
Connective breast tissue providing a “skeletal” framework for the breast
Where are Coopers ligaments located?
Within the subcutaneous layer of the breast
Where does Coopers ligaments course?
Between the layers of the superficial fascia
Where does the superficial fascia lie?
Within the subcutaneous fat anterior to the mammary zone
Mammary zone
Breast parenchyma lying within the superficial fascia
What is the mammary zone composed of?(2)
- Epithelial
2. Stromal tissue
Where is the mammary zone located?
Between the subcutaneous fat and retromammary space
What does the retromammary space house?
Deep fascia
What is the retromammary space composed of?
Small fat lobules
Where is the retromammary space located?
Between the posterior margin of the mammary zone and the pectoral
muscles.
Where is the deep fascia located?
Within the retromammary space
Where is the pectoralis major muscle located?
Between the retromammary space and pectoralis minor muscle
Where is the pectoralis minor muscle located?
Deep to the pectoralis major muscle and anterior to the rib cage
What are the arteries that supply the breast? (2)
- Lateral thoracic artery
2. Internal mammary artery
Where does the lateral thoracic artery arise from?
The axillary artery
Where does the internal mammary artery arise from?
The subclavian artery
Where do the superficial veins lie compared to the superficial fascia?
Deep
Were do the deep veins drain into in the breast? (4)
- Internal mammary vein
- Axillary vein
- Subclavian vein
- Intercostal vein
Where do lymph vessels generally course?
Parallel with the venous system
