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Anatomy · Thorax
Sample itemOn axial thoracic imaging, which central compartment contains the heart, trachea, and esophagus between the pleural cavities?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Mediastinum
The mediastinum is the central thoracic compartment between the pleural sacs and contains the heart, great vessels, trachea, and esophagus.
Option by option
A. Costal cartilage
Costal cartilage connects ribs to the sternum anteriorly.
B. Pleural recess
Pleural recesses are potential spaces at pleural reflections, not the central compartment.
C. Mediastinum (correct)
Correct: mediastinum is the central compartment between the lungs.
D. Diaphragmatic crura
Diaphragmatic crura are muscular attachments of the diaphragm.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.