\pˌɛɹɪkˈɑːdi͡əm], \pˌɛɹɪkˈɑːdiəm], \p_ˌɛ_ɹ_ɪ_k_ˈɑː_d_iə_m]\
Definitions of PERICARDIUM
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1919 - The Winston Simplified Dictionary
- 1920 - A practical medical dictionary.
- 1898 - Warner's pocket medical dictionary of today.
- 1899 - The american dictionary of the english language.
- 1914 - Nuttall's Standard dictionary of the English language
- 1846 - Medical lexicon: a dictionary of medical science
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
- 1871 - The Cabinet Dictionary of the English Language
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By Princeton University
By DataStellar Co., Ltd
By Oddity Software
By Noah Webster.
By DataStellar Co., Ltd
By William Dodge Lewis, Edgar Arthur Singer
By Stedman, Thomas Lathrop
By William R. Warner
By Daniel Lyons
By Nuttall, P.Austin.
The pericardium is a membranous sac, which envelopes the heart, and the arterial and venous trunks that pass from or into it. It is seated in the separation of the mediastinum, above the central aponeurosis of the diaphragm, to which it strongly adheres. Its shape is triangular, like that of the heart, to which it is fitted. The pericardium is composed of two membranes :-the one-external-fibrous; the other-internal-serous. The latter, having lined the inner surface of the external layer, is reflected over the heart, and covers it entirely; without, however, having the heart within it; in which arrangement it resembles other serous membranes. The pericardium envelops the heart; retains it in position, and facilitates its movements by means of the serous fluid contained in its cavity-Cavum pericardii-and secreted by the membrane- Liquor seu Aqua seu Humor seu Lympha seu Urina Pericardii, Hydrocardia, which it contains in greater or less quantity. The arteries of the pericardium are small, and derived from the superior phrenic, anterior me-diastinal and bronchial. The veins accompany them, and open into the brachio-cephalic. No nerves have been traced to it. The lymphatics enter the lymphatic glands that surround the vena cava superior.
By Robley Dunglison
By Willam Alexander Newman Dorland
The some what conical membranous sac that contains the heart. It is attached by its base to the central tendon of the diaphragm, and its apex surrounds the vessels arising from the base of the heart. It consists of a dense external fibrous layer, which is continued up on to the great vessels in tubular prolongations that blend above with the cervical fascia. The internal or serous layer covers the heart and the origins of the great vessels, and is reflected upon the inner surface of the outer layer, forming a closed sac which secretes a thin watery fluid. See epicardium.
By Smith Ely Jelliffe