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The heart has three layers. They are the: Epicardium: This thin membrane is the outer-most layer of the heart. Myocardium: This thick layer is the muscle that contracts to pump and propel blood ...
Each of the four chambers of the heart has its own valve. They are: Tricuspid valve: This valve is located between the right atrium and right ventricle.It is also called the right AV valve ...
The circulatory system works thanks to constant pressure from the heart and valves throughout the body. This pressure ensures that veins carry blood to the heart and arteries transport it away ...
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
The heart is under the rib cage, to the left of your breastbone (sternum) and between your lungs. On the outside, the heart is made of muscle. The strong muscular walls contract (squeeze), pumping ...
Description. Diagram of the human heart (cropped).svg. Diagram of the human heart, created by Wapcaplet in Sodipodi. Cropped by Yaddah to remove white space (this cropping is not the same as Wapcaplet's original crop). English: Diagram of the human heart.
If doctors removed your ticker, it would keep beating for a little while, thanks to its own electrical system. Heard about the guy who lived with an artificial heart for 555 days? It kept him ...
Coronary arteries function primarily to bring blood to your heart muscle. Without keeping the heart muscle oxygenated, you would be at greater risk of heart disease and heart attacks. Most people ...