Features of the system
The human heart is no larger than the average fist, hollow inside and weighs about three hundred grams. For a day it is reduced approximately 100 thousand times, pumping about 9 thousand liters of blood.
Nature has given the heart an amazing reserve of strength, and if the heart is provided with enough oxygen and nutrients, it will be able to work full-time for at least two centuries. But. .. cardiovascular diseases interfere with this. These are diseases of the heart and blood vessels, including coronary heart disease, coronary heart disease, myocardial infarction, hypertension( hypertension) and stroke.
Very often cardiovascular diseases increase asymptomatically, and then sharp
changes in the blood vessel or chamber of the heart: stenosis( constriction), thrombosis( formation of blood clots) or aneurysm( dilatation).
The heart, like the rest of the body's tissues, requires nutrients and oxygen for normal operation. Blood, enriched with oxygen and nutrients, enters the heart muscle through the coronary arteries. They crown the heart from above, like a crown, hence the name. If the influx of blood to the heart for one reason or another decreases, the heart begins to "starve" and may die. A condition in which the tissues of the heart muscle begin to die from lack of oxygen is called myocardial infarction. With the death of significant areas of the heart muscle, the heart can not continue its work on pumping blood and stops.
By changing your lifestyle, you can exclude most of the risk factors( although not all of them): high blood pressure, high cholesterol level, smoking, obesity, sedentary lifestyle. However, one should not assume that all risk factors act equally on all people. The same lifestyle characteristics, considered to be risk factors, may increase the likelihood of developing cardiovascular disease in some people, but not act on others.
Much depends on the individual characteristics of a person, his heredity and the propensity to these or other diseases. In any case, the intake of kerosine-containing mixtures will only benefit the cardiovascular, and especially the circulatory, system.
Blood moves in the body along the vessels and represents a kind of "river of life".In the human body there are five liters of blood, circulating it along vessels with a total length of about 96 thousand kilometers. Its health, quality of life depends on its condition, purity and harmonization. Blood consists of a liquid part - plasma and several kinds of cells: red - red blood cells, colorless - leukocytes and blood platelets - platelets. Red blood cells contain a lot of protein-rich red pigment - hemoglobin, it delivers to all organs and tissues oxygen, which enters the bloodstream from the lungs, absorbs carbon dioxide, which is further released by the lungs.
The main role of leukocytes is to protect the body from infections. Some forms of leukocytes are able to absorb and remove from the blood and intercellular fluid not only microbes, but also microscopic particles alien to the body( for example, fine coal dust, "fragments" of tissues destroyed by microbes, etc.).Other forms of leukocytes actively participate in complex processes of development of immunity to diseases - immunity. Blood platelets, or platelets, along with several dozens of other factors are involved in blood clotting. The lifespan of blood elements does not exceed several months, and in some diseases - less than a month. Therefore, it is very important to take care of restoring the blood composition for chronic diseases, after chemotherapy, surgeries and in other cases.
The main function of the blood is the delivery to organs and tissues of the necessary substances, from food to gas, and transportation of all kinds of connections to other organs from them. As in
any liquid, in the blood these substances can be dissolved, and then they are available for assimilation, or in insoluble form( as a precipitate).There are a number of blood diseases: anemia( or anemia), blood clotting disorders( bleeding, increasing blood coagulability), immunodeficiency syndromes, etc.