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Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The thin serous membrane, composed of endothelial tissue, that lines the interior of the heart.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A thin serous membrane that lines the interior of the heart.

from the GNU version of the Collaborative International Dictionary of English

  • n. The membrane lining the cavities of the heart.

from The Century Dictionary and Cyclopedia

  • n. In anatomy, the lining of the heart, as distinguished from the pericardium, or investing membrane of that organ; the membrane forming the inner surface of the walls of the cardiac cavities, or this surface itself.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the membrane that lines the cavities of the heart and forms part of the heart valves

Etymologies

New Latin : endo- + Greek kardiā, heart; see kerd- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • The endocardium is a thin, smooth membrane which lines and gives the glistening appearance to the inner surface of the heart; it assists in forming the valves by its reduplications, and is continuous with the lining membrane of the large bloodvessels.

    V. Angiology. 4b. The Heart

  • The inner surface of the heart is lined by a serous membrane, the endocardium, which is smooth and firmly adherent to the muscular structure of the heart.

    Special Report on Diseases of the Horse

  • In the Flesh we see present in section: the myocardium, the endocardium, the vagus nerve and also the left ventricle of the heart for the large thickness of the myocardium.

    Feast of Corpus Christi

  • Secondly, metastases from the lung to the heart are usually the result of direct extension and almost always involve the outer pericardium, not the endocardium.

    Fatal Care

  • First, metastatic lesions to the endocardium are rare, even rarer than primary cardiac malignancies.

    Fatal Care

  • And the inmost layer is the endocardium, a very thin smooth layer of cells that lines the inner surface of the heart.

    Healing the Female Heart

  • This attacks the lining membrane, or endocardium, and causes, not infrequently, a shrinkage of the heart valves.

    Physiology and Hygiene for Secondary Schools

  • All the cavities of the heart are lined with a smooth, delicate membrane, called the _endocardium_.

    Physiology and Hygiene for Secondary Schools

  • It is covered by the visceral layer of the serous pericardium (epicardium), and lined by the endocardium.

    V. Angiology. 4b. The Heart

  • —Between the endocardium and the ordinary cardiac muscle are found, imbedded in a small amount of connective tissue, peculiar fibers known as Purkinje fibers.

    V. Angiology. 4b. The Heart

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