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The heart muscle, also called myocardium, is the layer of muscle tissue located between the endothelium and the lining of the heart, which separates it from blood and other organs, the latter being composed of myocardial cells. Structural muscle cells, usually monoclonal and bound together by specially rounded disks, allow the junction of specialized cells and organize the rapid and repeated contraction of muscle cells of the myocardium, resulting in blood loss throughout the body. body.
Heart muscle structure
The heart muscle is found only in the heart of animals, it is a specialized form of muscle that develops and shrinks constantly, thus ensuring blood circulation throughout the body. The heart is a relatively simple organ that, through all changes and twists, has only three layers. The peritoneal pericardium surrounds the heart muscle from the outside to protect it from contact with other organs. The pterygium of the outer layer penetrates into a layer filled with fluid that helps lubricate the heart, inner layer or ventricle and separates the muscles from the blood pumped into the chambers. The heart, between these two pages, is the myocardium, sometimes called myocardium.
Look at the heart muscle closely
When we look closely at the heart muscle, we find that they are arranged in sheets of cells linked in a poetic way: two cells meet at a specialized intersection called disk surrounded by the two cells in their place, whereas this region resembles a black disc under the microscope. These are gap junctions that can transmit impulse to connected cells that intersect between nerves and blood vessels as well as to blood vessels that transmit signals and oxygen to the heart muscle.
Structural heart muscles
At the microscopic level, the heart muscle is regulated, like the skeletal muscles. Both conical muscle tissues mean that they have dark, light bands when viewed under a microscope. This band is created by a highly structured "sarcomere", the sarcomer is a protein-sensitive protein package. These metastatic tumors consist of actin and myosin and are supported by the same proteins as tropomyosin, a protein that envelops actin and prevents myosin from binding. Tryponin is a protein that keeps tropomycin in place until a signal is received. The same muscle both structural and the heart.
Heart function
As in muscles and skeletons, muscles give signals to work, but in structural muscles, this signal usually comes from the physical or voluntary nervous system, the heart muscle is controlled by the autonomic nervous system, the cells of your brain and the cells of your heart are working to break free. Timed pulses indicate that the heart cells are tight. Although the signal source is different, the signal reception and the rest of the contraction are very similar.
The potential for action or impulse on the surface of the cell stimulates a specialized organic release of calcium ions (Ca2 +), called "sarcoplasmic retina," derived from the endoplasmic network of the body. a public cell. The Ca2 + emulsions present in the cytoplasm affect the troponin protein, lead to the release of Tropomocin, then use the energy stored in the molecule to walk along the actin filaments and shorten the length of each muscle mass. impulse disappears, Ca2 + is rapidly re-absorbed into the sarcoplasmic network, repositioning troposonosin and releasing cells from the heart muscle A nation that speaks whenever your heart beats.
Heart muscle cells
Since all the muscle cells work in unison, the heart chambers can be powered. The heart muscle leaves are arranged to act perpendicular to one another, which causes the heart to contract in multiple directions and the ventricles and atria of the heart to contract. From top to bottom and from one side to the other where the multi – level muscle fibers contract, this results in a strong pumping force and a flap in the ventricles that pumps blood throughout the body.
The echocardiogram can detect abnormalities in the functioning of the heart wall. The patient may be asked to exercise either by walking on a treadmill or by exercise bike. The echocardiogram is performed before exercise as the basis of heart health.
Disease of atherosclerosis
The heart muscle may not receive enough blood during exercise.In the course of an echocardiogram, areas of the heart muscle that do not receive sufficient blood flow, as well as other parts of the heart, may seem dysfunctional. Directly shrinking or narrowing the coronary arteries can cause chest pain (angina), shortness of breath, or failure to show symptoms.
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