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DMS STUDY GUIDE (EXAM II) QUESTIONS WITH 100% CORRECT ANSWERS!!
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DMS STUDY GUIDE (EXAM II) QUESTIONS WITH 100% CORRECT ANSWERS!!
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DMS STUDY GUIDE(EXAM II) QUESTIONS
WITH 100% CORRECT
ANSWERS!!
DMS
Evatee 10/18/24 DMS
,DMS STUDY GUIDE (EXAM II) QUESTIONS
WITH 100% CORRECT ANSWERS!!
Between the skin and chest wall, the breast is subdivided by fascial planes into
three layers Answer - The subcutaneous fat layer
The mammary (parenchymal) layer
The retromammary fat layer
What is the nipple? Answer - a round fibromuscular papilla projecting from the
center of the breast that is encircled by the pigmented areola
What does small bumps on the areola mark the sites as? Answer - sebaceous
glands (Montgomery glands), which secrete an oily substance to lessen drying
and cracking of the nipple during breastfeeding.
What is within the mammary layer? Answer - 15-20 overlapping lobes
arranged in a fashion around nipple
What does each lobe contain? Answer - 20 to 40 terminal ductolobular units
(TDLUs) which are the functional units of the breast
What is the primary arterial blood supply breast? Answer - branches from the
interna thoracic mammary artery, the lateral thoracic artery, and to a lesser
extent the thoracoacromial artery.
Where does arterial anastomoses occur the breast? Answer - beneath the
areola
, Where does the majority of breast lymph drains into? Answer - the axillary
lymph nodes with lesser drainage to the internal mammary nodes,
interpectoral (Rotter) nodes and the supraclavicular nodes
What is the anatomic layers of the breast? Answer - skin, subcutaneous
(premammary) layer, mammary layer
retromammary space, muscle layers, chest wall
The muscle layer are: Answer - pectoralis major muscle
pectoralis minor muscle
What is the ultrasound normal appearance of the breast layers are: Answer -
Skin: hyperechoic fat - medium gray, Cooper's ligaments - echogenic linear
structures
Mammary layer: isoechoic or slightly hypoechoic to fat, lactiferous ducts -
hypoechoic
Muscles: hypoechoic with echogenic striations
Ribs: hyperechoic with shadowing
What are the most common developmental anomalies of the breast? Answer -
Amastia: absence of breast
Polymastia: more than 2 breasts
Athelia: absent nipple
Polythelia: acessory nipple
Nipple inversion
What are the normal ultrasound findings of the normal intramammary lymph
node? Answer - The size of a normal intramammary node is typically less than
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