mediastinum(redirected from Posterior mediastinal cavity)
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Related to Posterior mediastinal cavity: Middle mediastinum
n. pl. me·di·as·ti·na (-nə)
The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.
[New Latin mediastīnum, from neuter of Medieval Latin mediastīnus, medial, middle, from Latin, servant employed on general tasks (Medieval Latin anatomical sense probably influenced by Latin intestīnum, intestine), from medius, middle; see medhyo- in Indo-European roots.]
me′di·as·ti′nal (-nəl) adj.
n, pl -na (-nə)
1. (Anatomy) a membrane between two parts of an organ or cavity such as the pleural tissue between the two lungs
2. (Anatomy) the part of the thoracic cavity that lies between the lungs, containing the heart, trachea, etc
[C16: from medical Latin, neuter of Medieval Latin mediastīnus median, from Latin: low grade of servant, from medius mean]
me•di•as•ti•num(ˌmi di æˈstaɪ nəm)
n., pl. -na (-nə)
1. a median septum or partition between two parts of an organ or paired cavities of the body.
2. the area in the chest that lies between the lungs, is bounded by the sternum, the spinal column, and the diaphragm, and contains the heart, esophagus, trachea, and other thoracic structures.
[1535–45; < New Latin < Medieval Latin mediastīnus middle class, derivative of Latin medius mid1]
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|Noun||1.||mediastinum - the part of the thoracic cavity between the lungs that contains the heart and aorta and esophagus and trachea and thymus|
1. cavidad entre dos órganos;
2. masa de tejidos y órganos que separa los pulmones.