Breast Flashcards
Extend toward the axilla forming axillary
Tail of spence
Breast grows during puberty
12- 15 years
Drained by a lactiferous duct which opens on the nipple
Lobule
Give rise to buds that form 15-20 lobules of glandular tissue
Lactiferous ducts
Each duct has a dilated portion called
Lactiferous sinus
Where milk accumulates during lactation
Lactiferous sinus
The bulk of the breast tissue is __________ interspersed with connective tissue
Addipose tissue
Breast ducts comprise only about _____ of the breast mass
10%
Breast has no
Muscle
Each breast has how any lobes
8-10
Inside each lobe are many smaller structures called
Lobules
At the end of each lobule are tiny sacs _____ that can produce milk
Lobe
You can find axillary lymphnodes
Tail of spence
Lobes, lobules and bulbs are linked by a network of thin tubes
Lactiferous duct
Ducts carry milk from bulbs toward dark area of skin in the center of the breast
Areola
Determine the size of breast
Fat
Contains sebaceous glands
Enlarge during pregnancy and secrete oilysubstance that provides a protective lubricant for the areola andnipple
Montgomery
Light colored in
Nulliparous
Nipple are located at
4thICS nulliparous
Compress lactiferous ducts and erect the nipples when they contract
Smooth muscle
Mammary gland separated from pectoral muscle by
Deep fascia
Where silicone is inserted for augmentation
Retromammary space
Each septum is called suspensory or
Ligament of cooper
4quadrant
Upper inner
Lower inner
Upper outer
Inner outer
Attaches mammary gland to skin of breast.
Run between the skin and deep fascia
Coopers ligament
Arterial supply
Intercostal artery
Internal thoracic artery
Lateral thoracic artery
Thoracoacromial artery
Branch of axillary artery
Lateral thracic and thracoacromial artery
Venous drainage axillary vein
Internal thorcic vein
Lateral thoracic vein
Intercostal vein
Nerve supply
T2-T6 via lateral and anterior cutaneous nerves
Lymph vessel accompany the ducts towards the nipple
Centri-petal
Away from the nipple
Centri-fugal
Subareolar network drains into the
Pectoral( axillary, 75%)
Parasternal
Interpectoral or rotters
PSLCA
Pectoral Subscapular Lateral Central Apical
Lactiferous ducts branch more More fat deposition
Puberty
Increase size due to inc FSH and LH
Menstruation
Inc size to due formn of new glands, alveoli [milk-secreting cells], in grapelike cluster
Pregnancy
Small and wrinkled Dec in glands and fat
Menopause
Lobule
Fibroadenoma
Cystic disease
Lobular cancer
Duct
Ductal cancer
Sinus
Duct ectasia
Nipple
Paget’s disease
Fat
Phyllodes tumor
The cancer cells invaded the wall of duct
Invasive ductal carcinoma 80%
cancer cells breaking through the wall
Invasive lobular carcinoma
