new_n_lost
Politically InCorrect
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A patient who has suffered severe chest trauma in an automobile accident is found to have fluid in the right pleural space. A thoracentesis reveals the presence of chylous fluid in the pleural space, suggesting a rupture of the thoracic duct.
In which regions of the thorax is the thoracic duct found?
A. Anterior and middle mediastinum
B. Anterior and superior mediastinum
C. Middle and posterior mediastinum
D. Middle and superior mediastinum
E. Posterior and superior mediastinum
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| ellen
Forum Senior
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E...
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| SILVER
DoWhatYou'veGotToDo
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confused between C and E
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| po
Forum Elite
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yep,E seems to be the answer.Had to dig gray.
http://education.yahoo.com/reference/gray/subject...
ascends through the posterior mediastinal cavity between the aorta and azygos vein. Behind it in this region are the vertebral column, the right intercostal arteries, and the hemiazygos veins as they cross to open into the azygos vein; in front of it are the diaphragm, esophagus, and pericardium, the last being separated from it by a recess of the right pleural cavity. Opposite the fifth thoracic vertebra, it inclines toward the left side, enters the superior mediastinal cavity, and ascends behind the aortic arch and the thoracic part of the left subclavian artery and between the left side of the esophagus and the left pleura, to the upper orifice of the thorax.
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| new_n_lost
Politically InCorrect
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| new_n_lost
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The correct answer is E.
The mediastinum is divided into four regions. The region above the manubriosternal junction (level of fourth thoracic vertebra) is the superior mediastinum. The region below the manubriosternal junction is divided into the anterior mediastinum (anterior to the pericardium), the middle mediastinum (within the pericardium), and the posterior mediastinum (posterior to the pericardium). The thoracic duct enters the thorax through the aortic hiatus of the diaphragm. At this point it lies in the posterior mediastinum, the region posterior to the pericardium. As it ascends through the thorax and passes the level of the fourth thoracic vertebra, it enters the superior mediastinum.
The anterior mediastinum (choices A and B) contains the thymus and fatty connective tissue.
The middle mediastinum (choices A, C, and D) contains the heart and the roots of the great vessels.
In addition to the thoracic duct, the superior mediastinum (choices B, D, and E) contains the ascending aorta, aortic arch, branches of the aortic arch, descending aorta, superior vena cava, brachiocephalic veins, thymus, trachea and esophagus.
In addition to the thoracic duct, the posterior mediastinum (choices C and E) contains the descending aorta, azygos vein, hemiazygos vein and the esophagus
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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