MEDIASTINUM
\mˈiːdiːəstˌɪnəm], \mˈiːdiːəstˌɪnəm], \m_ˈiː_d_iː__ə_s_t_ˌɪ_n_ə_m]\
Sort: Oldest first
By William R. Warner
-
The space between the right and left pleura in and near the median sagittal chest plane; an incomplete vertical septum of the testis.
By Henderson, I. F.; Henderson, W. D.
-
A membranous space formed by the approximation of the pleura, dividing the chest into two parts, the one right, the other left. The mediastinum, formed by a double reflection of the pleura, extends from the spine to the posterior surface of the sternum. Its anterior part, called Anterior mediastinum, Mediastinum pectorale, lodges, at its upper part, the thymus gland in the foetus, and is filled below with fatty, areolar tissue. Its posterior part, parallel to the spine, is occupied by the oesophagus, vena azygos, thoracic duct, the lower part of the windpipe, the origin of the brouchia and a number of lymphatic glands. This part is called the posterior mediastinum- Mediastinum dorsale. By some anatomists, Mediastinum is defined to be the pleural walls of the membranous space, whilst the space itself is termed Cavum mediasti'ni.
By Robley Dunglison
By Willam Alexander Newman Dorland
-
Of the ancients, any structure serving as a partition, especially those portions of the pleurae that form the lateral boundaries of the m. of modern anatomists, which is the interpleural space, or median space of the thorax, between the two pleurae, containing all the thoracic viscera except the lungs.
By Smith Ely Jelliffe
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).