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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. Below the mesothelial cells is a layer of adipose and connective tissue that binds the epicardium to ...
- Heart Valves Anatomy
Understanding heart valves anatomy is important in grasping...
- Pericardium
Between the layers is the pericardial cavity, a potential...
- Oral Cavity
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 blood flow through the heart is quite logical. It...
- Cardiac Muscle Tissue Histology
Cardiac muscle tissue, also known as myocardium, is a...
- Ventricles
The outer surface of the heart is marked by depressions...
- Atria
The heart is located in the mediastinum within a region...
- 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 · 2. Myocardium (Middle Layer of Heart) Myocardium is the middle thickest muscular layer made up of cardiomyocytes. It is responsible for the contraction and relaxation actions of the heart. The SA (sinoatrial) and the AV (atrioventricular) nodes of the heart conduction system are mostly located in this layer.
Oct 30, 2023 · The heart is a muscular organ comprised of three layers that include the endocardium, myocardium, and epicardium.. The myocardium is the middle muscular layer of the heart. 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.
- Content Manager
- 14 min
Oct 20, 2024 · The slight deviation of the apex to the left is reflected in a depression in the medial surface of the inferior lobe of the left lung, called the cardiac notch. Figure 17.2.1 17.2. 1: Location of Heart in the Thorax. The heart is located within the thoracic cavity, medially between the lungs in the mediastinum.
The Heart Wall: The wall of the heart is composed of three layers, the thin outer epicardium, the thick middle myocardium, and the very thin inner endocardium. The dark area on the heart wall is scarring from a previous myocardial infarction (heart attack). The outer layer of the heart wall is the epicardium.
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Mar 24, 2022 · The heart is made of three layers of tissue. Endocardium is the thin inner lining of the heart chambers and also forms the surface of the valves. Myocardium is the thick middle layer of muscle that allows your heart chambers to contract and relax to pump blood to your body. Pericardium is the sac that surrounds your heart. Made of thin layers ...
