Thorax regional anatomy

Thorax regional anatomy - Term Definition Cylindrical...

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Term: Cylindrical thorax consists of what? Definition: Wall, two pleural cavities, the lungs, and mediastinum. Term: What are mammary glands Definition: Modified sweat glands in the superficial fascia anterior to the pectoral muscles and the anterior thoracic wall. Term: What's the mammary gland consist of? Definition: 15-20 lactiferous ducts which open independently onto the nipple, surrounded by the areola. Term: What do the connective tissue make? Definition: Suspensory or coppers ligaments which are continuous with the dermis of the skin and support the breast. Term: Carcinoma of the breast causes what? Definition: Pitting of the skin by putting tension on the coopers ligaments.
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Term: Non lactating women have what? Definition: A lot of fat, while glandular tissue is more abundant in lactating women. Term: Retromammary space? Definition: A layer of loose connective tissue separating the breast from deep fascia. Term: Upper lateral region of the breast can project around what Definition: The lateral margin of the pec major and into the axilla. Term: Axillary process may what? Definition: May perforate deep fascia and extend as far superiorly as The apex of the axilla. Term: Arterial supply of the breast is by what? Definition: Laterally - vessels from the axillary artery like superior thoracic, thoracoacromial, lateral thoracic, and sub scapular.
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Term: What else? Definition: Medially, branches from the internal thoracic artery Term: And finally? Definition: Second to fourth intercostal arteries via branches that perforate the thoracic wall and overlying muscle Term: Veins drain into what? Definition: They parallel the Arteries and drain into the axillary, internal thoracic, and intercostal veins. Term: Innervation of the breast? (hint: branching) Definition: Anterior and lateral cutaneous branches of the second to sixth intercostal nerves. Term: Innervation of nipple? Definition: Fourth intercostal nerve
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Term: 75 percent of lymph drains into what? Definition: The axillary nodes Term: Most of the others? Definition: Parasternal nodes deep to the anterior thoracic wall. Intercostal nodes near the head and necks of ribs. Term: Where do the nodes drain to?. (Axillary, Parasternal, and intercostals...) Definition: Axillary to subclavian, para sternal to bronco mediastinal, and intercostal drain into thoracic duct or into bronchomediastinal. Term: Pec major. Definition: O: medial half of the clavicle and anterior surface of sternum, first seven costal cartilages, aponeurosis of external oblique. I: lateral lip of inter tubercular sulcus. Term: Pec major innervation and function Definition: Medial and lateral pectoral nerves, adduction, medial rotation, and flexion of the humerus at the shoulder
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Term: Subclavius Definition: O: rib 1 at junction between rib and costal cartilage. I: groove on the inferior surface of middle third of clavicle. N: nerve to subclavius. F: pull clavicle medially to stabilize sternoclavicular joint.
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