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Aug 26, 2013 · The third layer of the heart wall is called the endocardium. It is a white sheet of endothelium (squamous epithelium) resting on a connective tissue layer. It is located on the inner myocardial surface and lines the heart chambers. The endocardium is continuous with the endothelial linings of the blood vessels leaving and entering the heart.
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Endocardium (endo-cardium) is the thin inner layer of the heart wall. This layer lines the inner heart chambers, covers heart valves, and is continuous with the endothelium of large blood vessels. The endocardium of the heart atria consists of smooth muscle, as well as elastic fibers. An infection of the endocardium can lead to a condition ...
Oct 20, 2024 · The dorsal surface of the heart lies near the bodies of the vertebrae and its anterior surface sits deep to the sternum and costal cartilages. The great veins, the superior and inferior venae cavae, and the great arteries, the aorta and pulmonary trunk, are attached to the superior surface of the heart, called the base.
Sep 14, 2021 · Surface Features of the Heart. Inside the pericardium, the surface features of the heart are visible, including the four chambers. There is a superficial leaf-like extension of the atria near the superior surface of the heart, one on each side, called an auricle—a name that means “ear like”—because its shape resembles the external ear of a human (Figure \(\PageIndex{2}\)).
The outer of these two layers is firmly applied to the inner surface of the fibrous pericardium, and is termed the parietal layer. This layer is reflected around the roots of the great vessels to become continuous with the visceral layer (also called the epicardium), which covers the surface of the heart, and is firmly applied to it.
Jan 4, 2024 · Endocardium. The innermost layer of the cardiac wall is known as the endocardium. It lines the cavities and valves of the heart.. Structurally, the endocardium is comprised of loose connective tissue and simple squamous epithelial tissue – it is similar in its composition to the endothelium which lines the inside of blood vessels.
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Covers the deep surface of the fibrous parietal pericardium; often referred to as the serous parietal pericardium. Visceral layer of serous pericardium. Serous tissue that intimately follows the external contours of the heart surface; the combination of visceral pericardium with the underlying loose connective and adipose tissues is referred to as the epicardium .
