Search results
Electrical conduction system
slideserve.com
- 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 main function of the myocardium is to facilitate the contraction and relaxation of the heart walls in order to receive and pump the blood into the systemic circulation. In addition, the myocardial cells provide a scaffold for heart chambers and conduct electrical stimuli.
- Circulatory System
The heart. The heart is a muscular pump that is the central...
- 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.
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.
- Heart anatomy. The heart has five surfaces: base (posterior), diaphragmatic (inferior), sternocostal (anterior), and left and right pulmonary surfaces. It also has several margins: right, left, superior, and inferior
- Heart valves. Heart valves separate atria from ventricles, and ventricles from great vessels. The valves incorporate two or three leaflets (cusps) around the atrioventricular orifices and the roots of great vessels.
- Blood flow through the heart. The blood flow through the heart is quite logical. It happens with the heart cycle, which consists of the periodical contraction and relaxation of the atrial and ventricular myocardium (heart muscle tissue).
- Coronary circulation. The heart must also be supplied with oxygenated blood. This is done by the two coronary arteries: left and right. Heart muscles work constantly (thank goodness!)
Jul 30, 2023 · The heart is made up of three layers—pericardium, myocardium, and endocardium. The endocardium is not cardiac muscle and is comprised of simple squamous epithelial cells and forms the inner lining of the heart chambers and valves.
- 2023/07/30
Your heart walls are the muscles that contract (squeeze) and relax to send blood throughout your body. A layer of muscular tissue called the septum divides your heart walls into the left and right sides. Your heart walls have three layers: Endocardium: Inner layer. Myocardium: Muscular middle layer. Epicardium: Protective outer layer.
People also ask
Which layer of the heart is in direct contact with the myocardium?
How does the myocardium work?
Where is the myocardium located?
Which muscle is responsible for the pumping action of the heart?
Which muscle layer enables heart contractions?
Nov 3, 2023 · Histologically, the heart is made of three layers of tissue: epicardium, myocardium, and endocardium. Contents. Epicardium. Myocardium. Endocardium. Clinical relations: Endocarditis. Sources. + Show all. Epicardium. Visceral layer of pericardium. Lamina visceralis pericardii. 1/2. Synonyms: Epicardium.
