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Breast and Mammary Gland
describing the function of lymph nodes in mammary glands
10
Biology
Graduate
09/21/2013

Additional Biology Flashcards

 


 

Cards

Term
Breast Anatomy
Definition

Divided into the upper and lower lateral and medial quadrants. Has mammary glands which lie in Superficial fascia

 

Suspensory ligaments attach to the deep superficial fascia

 

Recieves blood from medial mammary branches of the internal thoracic artery. the lateral mammary branches arise from the lateral thoracic artery

 

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Term
Mammary Glands
Definition

Modified sweat gland located in the fatty superficial fascia

 

Axillary tail , a small part of the mammary gland that extends superolaterally

 

Innervated by the anterior and lateral cutaneous branches of the intercostal nerves


retromammary space, composed of loose aerolar tissue which allows mobility of the breast over the pec major

 

Lactiferous duct enlarges to form a lactiferous sinus, seperated by the fibrous septa that radiates from the nipple

 

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Term
Breast Cancer
Definition

Occurs frequently in the upper lateral quadrant

 

It enlarges attaching to suspensory ligaments, producing shortening of the ligaments, causing a depression or dimpling of the overylying skin

 

Advanced sign, peau d orange is the edematous swollen obstruction of the subcutaneous lymphatics.

 

Cancer may attach to and shorten the lactiferous ducts , resulting in a retracted or inverted nipple

 

Another sign, when the cancer spreads to the retromammary space , so that when the pec major contracts, the breast moves upward

 

Surgical options include: Masectomy and Radical Masectomy (includes the pec major removal) ouch!

 

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Term
Lymphatic Drainage of the breast
Definition

Central Nodes- lie near the base of the axilla btw the lateral thoracic and subscapular veins; recieves lymph from the lateral, anterior and posterior groups of nodes and drains into the apical nodes, then drains into the subclavian trunks

 

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Term
Route of Lymph nodes in axilla
Definition
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Term
 metastatic cancer of the apical group
Definition
The nodes often adhere to the axillary vein.  Enlargement of the apical nodes may obstruct the cephalic vein superior to the pectoralis minor
Term
 lymphedema
Definition
Lymphatic drainage of the upper limb may be impeded after the removal of the axillary nodes
Term
thoracodorsal nerve
Definition
 medial rotation and adduction of the arm are weakened
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