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The pericardial layers and layers of the heart wall. 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.
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- Atherosclerosis
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- Blood
Blood - Heart Anatomy: size, location, coverings and layers
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Reproductive - Heart Anatomy: size, location, coverings and...
- Glandular Epithelium
A) Endocardium - covers the inner surfaces of the heart. B) Myocardium - cardiac muscle. C) Trabeculae carneae - found on the interior walls of ventricles. D) Pectinate muscles - muscles that close valves.
The limbs of the U are separated by a muscular ridge termed the supraventricular crest. The upper limb, or conus arteriosus (or infundibulum), is the arterial, or outflowing, part of the ventricle, and it ends in the pulmonary trunk. The walls of the conus are usually smooth.
Inside the pericardium, the surface features of the heart are visible, including the four chambers. There is a superficial leaf-like extension of each atrium near the superior surface of the heart, one on each side of the pulmonary trunk, called an auricle—a name that means “ear like”—because its shape resembles the external ear of a ...
- Regina Bailey
- Epicardium. Epicardium (epi-cardium) is the outer layer of the heart wall. It is also known as visceral pericardium as it forms the inner layer of the pericardium.
- Myocardium. Myocardium (myo-cardium) is the middle layer of the heart wall. It is composed of cardiac muscle fibers, which enable heart contractions. The myocardium is the thickest layer of the heart wall, with its thickness varying in different parts of the heart.
- Endocardium. 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.
Sep 14, 2021 · 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 ...
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Oct 20, 2024 · The double layered pericardial sac creates a thin space surrounding the heart called the pericardial cavity that is filled with serous fluid to prevent friction as the heart beats. 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.
