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Nov 3, 2023 · The epicardium is the outermost layer of the heart. It is actually the visceral layer of the serous pericardium, which adheres to the myocardium of the heart. Histologically, it is made of mesothelial cells, the same as the parietal pericardium.
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Understanding heart valves anatomy is important in grasping...
- Pericardium
Between the layers is the pericardial cavity, a potential...
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Oral cavity. The oral cavity is situated anteriorly on the...
- Conduction System
Here it lies in the subepicardiac layer of the heart, often...
- Structure, Valves, Coronary Vessels
The cusps are pushed open to allow blood flow in one...
- Cardiac Muscle Tissue Histology
Cardiac muscle tissue, also known as myocardium, is a...
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The outer surface of the heart is marked by depressions...
- Atria
Basic anatomy of the heart. The heart is at the center of...
- Heart Valves Anatomy
- 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.
Aug 4, 2023 · Histologically, the myocardium is primarily composed of cardiac muscle cells (cardiomyocytes) (arranged in a group called myofibers) and a few fibroblast cells. The cardiomyocytes are connected with each other through the intercalated discs. Anatomically, it is the thickest layer of the heart wall.
Oct 30, 2023 · It is the thickest layer which lies between the single-cell endocardium layer, and the outer epicardium, which makes up the visceral pericardium that surrounds and protects the heart. The myocardium is composed of specialized muscle cells called cardiomyocytes.
- Content Manager
- 14 min
The middle layer of the heart wall is the myocardium—the muscle tissue of the heart and the thickest layer of the heart wall. It is composed of cardiac muscle cells, or cardiomyocytes. Cardiomyocytes are specialized muscle cells that contract like other muscle cells, but differ in shape.
The myocardium, or cardiac muscle, is the thickest section of the heart wall and contains cardiomyocytes, the contractile cells of the heart. As a type of muscle tissue, the myocardium is unique among all other muscle tissues in the human body.
Sep 2, 2023 · Cardiac muscle tissue is located in the middle of three layers of the heart, called the myocardium. It is the thickest of the three layers. On its outer surface, the myocardium is surrounded by a thin, protective layer called the pericardium. On its inner surface, it is lined by the endocardium.
