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- The heart is composed of three layers: the epicardium (outer layer) which prevents excess expansion or movement of the heart, the myocardium (middle layer) which initiates contractions driving the cardiac cycle, and the endocardium (inner layer) that lines the cavities and valves.
Nov 3, 2023 · This article will discuss the layers of the heart (the epicardium, the myocardium and the endocardium) and any clinical relations pertaining to them. In the same way that vehicles have their fuel pumps, our body has the heart. The heart is a muscular organ found in the middle mediastinum that pumps blood throughout the body.
- 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. They don’t say for nothing ‘health comes first,...
- Conduction System
The cardiac conduction system is a network of specialized...
- Structure, Valves, Coronary Vessels
Why are they called the great vessels? Because they are...
- 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
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 · Layers of the Heart. There are three layers of the heart. They are: Epicardium (Outermost Layer), Myocardium (Middle Layer) and Endocardium (Innermost Layer).
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 heart is composed of three layers: the epicardium (outer layer) which prevents excess expansion or movement of the heart, the myocardium (middle layer) which initiates contractions driving the cardiac cycle, and the endocardium (inner layer) that lines the cavities and valves.
vein. s that bring blood towards the heart and; capillaries. , which are areas where gas, nutrient, and waste exchange occurs. Function of the Cardiovascular System. The main function of the cardiovascular system is to circulate blood throughout the body to meet the demands of body cells.
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. The base of the heart is located at the level of the third costal cartilage, as seen in Figure 19.1.1.
