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BREAST - UNIT 2
Terms in this set (27)
What kind of structure is the breast?
an epidermally derived structure
What does the breast consist of?
1. mammary glands
3. fibrous tissue
Where is the breast located?
between the second and the sixth ribs and between the sternum and the midaxillary line
What is the midaxillary line?
a vertical line dividing the armpit into anterior and posterior halves
Where is the nipple usually located at?
the level of the fourth intercostal space
What is the areola?
the ring of pigmented skin which surrounds the nipple
What is the axillary process (tail)?
the portion of the breast which extends back into the armpirt
What is a frequent site for cancer?
What is the suspensory ligaments of the breast?
strong fibrous septa which support the breast and which run through the breast from the skin to the deep layer of superficial fascia
What is the mammary gland?
a modified sweat gland located in the superficial fascia
How many lobes of glandular tissue does each gland have?
each gland has 15 to 20 lobes
Each lobe of glandular tissue opens onto the tip of the nipple through what?
a lactiferous duct
What is the lactiferous sinus?
an expansion of the lactiferous duct
What is the lactiferous duct serve as a reservoir for?
milk during lactation
What is the blood supply of the breast?
1. internal thoracic artery
2. thoracoacromial artery
3. lateral thoracic artery
4. intercostal arteries
What are the four parts of the lymphatic drainage of the breast?
1. axillary nodes
2. parasternal nodes
3. nodes of the opposite breast
4. nodes of the anteior abdominal wall
Where does 75% of the lymph from the breast drain to?
the axillary nodes
What is the most common cancer in women?
Breast cancer spreads to lymphatics first before spreading to where?
entering the bloodstream
Where does breast cancer usually spread to first?
For a clinical consideration of breast cancer, the posterior intercostal veins drain to where?
the azygos and hemiazygos systems
For a clinical consideration of breast cancer, connections to vertebral venous plexus allows spread to where?
vertebral column and brain
What are the clinical signs of breast cancer?
2. inverted nipple
3. leathery thickening of skin
Describe what the clinical sign of dimpling in breast cancer is due to.
due to the invasion of suspensory ligaments
Describe what the clinical sign of inverted nipple in breast cancer is due to.
due to invasion of lactiferous ducts
Describe what the clinical sign of leathery thickening of skin is breast cancer is like.
like an orange peel
What is one cause of midthoracic back pain in a female?
THIS SET IS OFTEN IN FOLDERS WITH...
UNIT II- LARYNX AND THORAX
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