СердцеСердце непрерывно перекачивае

Сердце
Сердце непрерывно перекачивает кровь по сосудам, разносящим ее по организму. Оно представляет собой два расположенных вплотную друг к другу, но отдельных насоса. В каждом насосе имеется собирающая камера (предсердие), нагнетающая камера (желудочек) и клапаны, предотвращающие обратный ток крови. Стенки сердца образованы сердечной мышцей; при ее сокращении кровь выбрасывается из желудочков в артерии, а при расслаблении полость сердца заполняется кровью.
Правая сторона сердца собирает отработанную кровь и гонит ее в легкие, где она насыщается кислородом. Левая сторона получает от легких кровь, богатую кислородом, и выталкивает ее в кровяное русло, охватывающее весь организм, в том числе в венечные (коронарные) артерии, снабжающие сердце.

Кровообращение
Из левого желудочка насыщенная кислородом кровь поступает в аорту, которая разветвляется на более мелкие артерии, те – на еще более тонкие артериолы и, наконец, на мельчайшие сосуды – капилляры.
Из капилляров, у которых очень тонкие стенки, содержащиеся в крови питательные вещества, кислород и гормоны переходят в тканевую жидкость, окружающую клетки, а оттуда – внутрь самих клеток. Клетки же выделяют в межклеточную среду продукты своей жизнедеятельности, включая диоксид углерода, которые поглощаются кровью; тепло также передается от клеток в кровоток.
Бедная кислородом кровь из капилляров собирается в более крупные сосуды – венулы, которые сливаются в еще более толстые, вены. По венам кровь поступает в правое предсердие и из него – в правый желудочек, который выталкивает ее через легочную артерию в легкие. Там в мелких газообменных пузырьках (альвеолах) диоксид углерода уходит в воздух и выдыхается, а кислород из вдохнутого воздуха проникает сквозь стенки альвеол и растворяется в крови. Насыщенная кислородом кровь по легочной вене попадает в левое предсердие, чтобы снова разойтись по всему кровяному руслу.

Кровь и кровеносные сосуды
Жидкая часть крови, называемая плазмой, своим течением несет по кровяному руслу различные клетки: эритроциты, переносящие кислород и частично диоксид углерода; лейкоциты, служащие для борьбы с инфекциями и уничтожения разрушенного тканевого материала; тромбоциты, обеспечивающие свертывание крови в месте повреждения кровеносных сосудов, – и разнообразные химические вещества.
В пищеварительной системе в кровь поступают питательные вещества. В плазме также содержатся гормоны и продукты обмена веществ, включая отходы, которые частично выводятся через почки с мочой.
При каждом сокращении сердца кровь выбрасывается в артерии, создавая бегущую волну давления, или пульс. Пульс прощупывается там, где можно сквозь кожу и подкожную клетчатку прижать артерию к кости.
Снабжение тканей кровью тем лучше, чем больше интенсивность кровотока.
Из тканей в сердце кровь течет по венам. Эти сосуды имеют тонкие стенки, работают под низким давлением и снабжены клапанами, предотвращающими обратный ток крови. Кровоток создается благодаря силе тяжести или сокращению близлежащих скелетных мышц

Результаты (английский) 1:

HeartThe heart continuously pumps blood around vessels, raznosâŝim her body. It represents the two located close to each other, but separate pump. Each pump has a collecting Chamber (Atrium), forcing the Chamber (ventricle) and the valves prevent backflow of blood. Heart wall formed cardiac muscle; with its reduction of blood ejected from the ventricles into the arteries, while relaxation of the heart cavity is filled with blood.The right side of the heart collects the dirty blood and drives her to the lungs where it is saturated with oxygen. Left side gets from the lungs the blood rich in oxygen, and pushes it into the blood stream, covering the entire body, including venečnye (coronary) arteries supplying the heart.Blood circulationFrom the left ventricle rich oxygenated blood enters the aorta, which branches into smaller arteries, those are even more subtle arterioles and finally to the tiniest vessels-capillaries.From capillaries, which have very thin walls, contained in the blood, oxygen, nutrients and hormones go into a fabric liquid surrounding cells, and from there-inside the cells themselves. The same cells secrete in intercellular Wednesday products of their life, including carbon dioxide, that are absorbed by the blood; heat is transferred from the cells into the bloodstream.Poor oxygenated blood from capillaries going into larger vessels-venules that converge into still thicker, Vienna. Veins carry blood enters the right atrium and from it-in the right ventricle, which pumps it through the pulmonary artery to the lungs. There's a small gazoobmennyh bubbles (alveoli) carbon dioxide goes into the air and exhaled, and oxygen from the air vdohnutogo penetrates through walls of alveoli and dissolves in the blood. Rich oxygenated blood on Lung Vienna enters the left atrium, again to disperse throughout the blood stream.Blood and blood vesselsThe liquid part of the blood, called plasma, its passage carries on blood stream of different cells: red blood cells, which carry oxygen and carbon dioxide in part; leukocytes to fight infections and destruction destroyed woven material; platelets, providing blood clotting in the place of the damage to the blood vessels, and a variety of chemicals.In the digestive system into the blood come nutrients. Plasma also contains hormones and metabolic products, including waste, some of which are excreted through the kidneys in the urine.At each reduction heart blood thrown in the arteries, creating a pressure wave or pulse. The pulse is palpable, where can be seen through the skin and subcutaneous fat to squeeze the artery to the bone.Tissue blood supply the better, the more the intensity of blood flow.Of tissue in the heart of the blood flowing through the veins. These vessels have a thin wall, working under low pressure and fitted with valves prevent backflow of blood. Blood flow is created due to gravity or reduce nearby skeletal muscles

Результаты (английский) 2:

Heart
The heart continuously pumps blood through the vessels that carry it throughout the body. It consists of two closely spaced to each other, but separate pump. Each pump has a collecting chamber (atrium), the pump chamber (ventricle) and valves that prevent blood from flowing back. The walls of the heart are formed by the heart muscle; when it is reducing the blood ejected from the ventricle into the arteries, and in the relaxation of the heart cavity filled with blood.
The right side of the heart collects the waste blood and drives it into the lungs, where it picks up oxygen. The left side receives lung blood rich in oxygen, and pushes it into the bloodstream, covering the entire body, including the coronary (coronary) arteries supplying the heart. Circulation From the left ventricle the oxygenated blood to the aorta, which bifurcates into smaller artery, those - for even finer arterioles, and finally to tiny blood vessels - the capillaries. from the capillaries have very thin wall contained in the blood nutrients, oxygen and hormones pass into the tissue fluid surrounding the cells, and then - into themselves cells. The cells also secrete into the extracellular environment of life of its products, including carbon dioxide, which are absorbed by the blood; heat is also transferred from the cells into the bloodstream. The poor oxygen from blood capillaries going into larger vessels - venules, which merge into more thick veins. Veins carry blood into the right atrium and from it - in the right ventricle, which pushes it through the pulmonary artery into the lungs. There's a small gas exchange vesicles (alveoli), carbon dioxide goes into the air and exhaled and oxygen from the inhaled air penetrates through the walls of the alveoli and dissolves in the blood. Blood through the pulmonary vein oxygenated enters the left atrium to again disperse throughout the bloodstream. Blood and blood vessels The liquid portion of the blood called plasma carries over his bloodstream at various cells: red blood cells that carry oxygen and carbon dioxide in part; white blood cells that serve to fight infections and destroy the ruined fabric material; platelets providing clotting of blood vessels at the site of injury, -., and a variety of chemical substances in the digestive system into the blood to nutrients. The plasma also contains hormones and metabolic products, including waste which is partially excreted through the kidneys in the urine. When each contraction of the heart blood is ejected into the arteries, creating a traveling pressure wave or pulse. The pulse is felt wherever possible through the skin and subcutaneous tissue to squeeze the artery to the bone. The supply of tissues with blood the better, the more the intensity of the blood flow. From the heart tissue in the blood flowing through the veins. These containers have thin walls, working at low pressure and provided with valves that prevent the backflow of blood. Blood flow is created by the force of gravity and reduce the surrounding skeletal muscle

Результаты (английский) 3:

heartthe heart has перекачивает blood receptacles, the boy on the body. it represents two located close to each other, but the individual pump. each pump has a collecting chamber (atrium), нагнетающая luggage (ventricle) and valves to prevent the flow of blood. the heart wall formed of cardiac muscle; with the decrease of ventricular blood is thrown in the artery, and the relaxing coronary heart is bleeding.the right side of the heart collects the waste blood and drives her to the lungs, where it is saturated with oxygen. left side receives light blood, rich in oxygen, and pushes her into the blood channel, covering the whole body, including венечные (coronary artery), providing the heart.blood circulationthis oxygen blood from the left ventricle is in the aorta, which is of smaller arteries, those are even more thin артериолы and, finally, in the small vessels and capillaries.from the capillaries, which have very thin walls contained in blood, nutrients, oxygen and hormones into the tissue fluid, the cells and it is inside the cells. the cells are provided in the межклеточную environment products of their life, including carbon dioxide, which absorbed blood; heat is transferred from the cells into the bloodstream.oxygen poor blood from the capillaries to venules in larger vessels, which become more thick veins. through his veins blood enters the right atrium and it is in the right ventricle, which pushes it through the pulmonary artery into the lungs. in the small газообменных bubbles (альвеолах) carbon dioxide is in the air and oxygen from the air to and вдохнутого penetrates through the walls of alveoli and dissolves in the blood. this oxygen blood to the pulmonary vein into the left atrium to disperse throughout the кровяному channel.blood and blood vesselsthe liquid part of blood, called plasma, its current is кровяному channel of various cells, red blood cells, which carry oxygen and partial carbon dioxide; white blood cells used for fighting infections and the destruction of a тканевого material; platelets, coagulation of blood at the site of damage to blood vessels, and various chemicals.in the digestive system in the blood are the nutrients. plasma also contains hormones and products exchange of substances, including waste, some of which are excreted through the kidneys and urine.for each reduction of the heart blood is running in the artery, creating a wave of pressure, or heart rate. pulse is thready where can be through the skin and подкожную клетчатку nail artery to the bone.tissue blood supply to the be