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Nov 3, 2023 · The endocardium has two layers. The inner layer lines the heart chambers and is made of endothelial cells. Superiorly, is the second layer: a subendocardial connective tissue which is continuous with the connective tissue of the myocardium. Branches of the heart’s conduction system are immersed into the subendocardial layer.
- Heart Valves Anatomy
Understanding heart valves anatomy is important in grasping...
- Pericardium
Like all serous membranes, it consists of two layers: The...
- Oral Cavity
Oral cavity. The oral cavity is situated anteriorly on the...
- Conduction System
The cardiac conduction system is a network of specialized...
- 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...
- 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
The wall of the heart is composed of three layers of different tissues. The outer layer is called the epicardium, or visceral pericardium, since it is also the inner wall of the pericardium. The middle layer of the heart, the myocardium, and contains specialized cardiac muscle tissue responsible for contraction.
- 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.
The heart wall is comprised of three layers, the epicardium (outer), myocardium (middle), and endocardium (inner). These tissue layers are highly specialized and perform different functions. During ventricular contraction, the wave of depolarization from the SA and AV nodes moves from within the endocardial wall through the myocardial layer to the epicardial surface of the heart.
Nov 3, 2023 · Like all serous membranes, it consists of two layers: The outer parietal layer that lays directly on the cavity wall, that is, onto the inner surface of the fibrous pericardium; The inner visceral layer that directly covers the organs in the cavity, that is, the heart. It is also called the epicardium as it is the outer covering of the heart.
- Medical Content
- 4 min
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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What is the dark area on the heart wall?
The outer layer of the balloon is called parietal pericardium and is fused to the inner surface of the fibrous pericardium. “ parietal ” means wall The visceral and parietal pericardia are separated by a thin film of lubricating fluid that allows the two layers to move relative to each other as the heart beats.
