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7-18 mediastinum

Where would you place your stethoscope to listen to the mitral valve? Apex of heart--left 5th intercostal space
What structures are in the middle mediastinum? Pericardium, heart, roots of great vessels- ascending aorta, pulmonary trunk, SVC
What structures are in the superior mediastinum? Thymus, great vessels (brachiocephalic veins and SVC), aortic arch, phrenic and vagus nerves, thoracic duct, lympathic trunks
What structures are in the posterior mediastinum? Thoracic aorta, thoracic duct, lympathic trunks, lymph nodes, azygos, hemiazygos, esophagus, esophageal nerve plexus
What structures are in the anterior mediastinum? Loose connective tissues, fat, lymphatic vessels, lymph nodes, branchesof internal thoracic vessels
When is the thymus most active? Childhood
What does the thymus play a role in? Immune system, T cell maturation
What two veins form the superior vena cava? Right and left brachiocephalic veins
What are the three branches of the aortic arch? Brachiocephalic trunk, left common carotid, left subclavian artery
What does the brachiocephalic trunk branch into? Right common carotid artery andright subclavian artery
What wraps around the right subclavian artery? Right recurrent laryngeal artery
What wraps around the aorta? Left recurrent laryngeal artery
What is the cardiac plexus near to? The carina
What is the esophagus posterior and anterior to? Posterior to trachea and anterior to vertebral column
What immpulses does a plexus have? Sensory and autonomic
What innervates the esophagus? Vagus nerve
What plexuses does the vagus nerve attribute to? Cardiac and esophageal plexuses
What are the sympathetic ganglion? Collection of nerves
What carries sympathetic impulses from the spinal cord? Sympathetic trunk
What vein is on the right side, but not the left? Azygos vein
What drains to the azygos vein? Intercostal veins
What does the azygos drain into? Superior vena cava
What major artery is on the left side, but not on the right? Aorta
What does the hemiazygos drain into? Azygos
What are the right and left venous angles formed by? Internal jugular and subclavian veins
Where does the left thoracic duct drain? Left venous angle
What does the right lymphatic duct drain? Above diaphragm and entire right half
Where does the right thoracic duct drain? Right venous angle
What does the thoracic duct drain? Diaphragm down and left side of head, neck, upper extremity
What does the right superior intercostal vein drain to? Subclavian vein
Where does the left superior intercostal vein drain into? Brachiocephalic vein
What is the parasympathetic division of the left vagus? Anterior vagal trunk
What is the paraysmpathetic division of the right vagus? Posterior vagal trunk
What is the structure differentiating between anterior and posterior vagal trunks? Esophagus
What are the three main openings of the diaphragm? Aorta, esophagus, inferior vena cava
What are the vertebral areas the openings are near? T8- inferior vena cava T10- esophagus T12- aorta
What causes a hernia? The openings are too wide so other things go through it
Created by: beranml



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