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- The myocardium is intimately connected with the heart’s electrical conduction system, which coordinates the rhythmic contraction of the heart. The sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and Purkinje fibers are specialized myocardial cells that conduct electrical impulses through the heart.
anatomy.co.uk/myocardium/Myocardium - Structure, Function, Location, Anatomy, Diagram
Oct 30, 2023 · 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.
- Circulatory System
Circulatory system. The circulatory system, also called...
- Pericardium
The pericardium is the membrane that encloses the heart and...
- Circulatory System
- 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.
- What Are The Parts of The Heart?
- Where Is Your Heart located?
- What Does Your Heart Look like?
The parts of your heart are like the parts of a building. Your heart anatomy includes: 1. Walls. 2. Chambers that are like rooms. 3. Valvesthat open and close like doors to the rooms. 4. Blood vesselslike plumbing pipes that run through a building. 5. An electrical conduction systemlike electrical power that runs through a building.
Your heart is in the front of your chest. It sits slightly behind and to the left of your sternum (breastbone), which is in the middle of your chest. Your heart is slightly on the left side of your body. It sits between your right and left lungs. The left lung is slightly smaller to make room for the heart in your left chest. Your rib cage protects...
Your heart looks a little bit like an upside-down pyramid with rounded edges. Large blood vessels go into and out of your heart to bring blood into and away from your heart. They connect your heart to the rest of your body, which it supplies with blood and oxygen.
Microanatomy. Illustration of a cardiac muscle cell. An isolated cardiac muscle cell, beating. Cardiac muscle cells (also called cardiomyocytes) are the contractile myocytes of the cardiac muscle. The cells are surrounded by an extracellular matrix produced by supporting fibroblast cells.
Nov 3, 2023 · Below the mesothelial cells is a layer of adipose and connective tissue that binds the epicardium to the myocardium and cushions the heart. Nerves and blood vessels that supply the heart are found in the epicardium.
Nov 7, 2024 · Myocardium. The myocardium is the thick, muscular middle layer of the heart wall responsible for the contractile function of the heart. It consists primarily of specialized cardiac muscle cells, known as cardiomyocytes, which have the unique ability to contract rhythmically and continuously throughout a person’s life.
Oct 31, 2024 · The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimulated by electrical impulses from a natural pacemaker, the sinoatrial, or S-A, node located in the muscle of the right atrium.
