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السبت، 27 أكتوبر 2012

Blood Circulation

Blood Circulation
Occur Arab world, Ibn al-Nafis (1210-1280) for the first time for micro-circulation and intended to promote blood circulation between the heart and lungs.After nearly four centuries came the British in 1678, "William Harvera" to talk in detail about great session and meant the circulation of blood between the heart and the rest of the body.The blood on a whirlwind tour of the human body, to reach every cell of it, carries the oxygen and food of any life, and carries waste, produced by and get rid of them through their work. On top of this waste carbon dioxide, which in turn get rid of it blood through a process of purification and cleaning take place in the lungs.And the blood passes through tours in the blood vessels of different capacities, size and composition.Called the vessels that carry blood from the heart to the other members of the body of the arteries, while called vessels that carry blood from the body to the heart veinsEveryone shall be two sessions: the bloody cycle or the circulatory system and other lymph.The circulatory system is divided blood or circulatory system into three parts all working at the same time:1 - Course pulmonary or Minor2 - plenary session or major session3 - Casement sessionMicro Valdorh or pulmonary circulation mobility blue blood to the lungs where it gets rid of carbon dioxide and provide themselves with oxygen. This is because blood red in color and loaded heart Booxgen.The plenary session of pure blood transfusion Red to the tissues.In textile filaments leaves blood carries oxygen and receives carbon dioxide and waste, to take her to and from the heart to the lungs through micro-session, which replaces the oxygen-carbon dioxide.The session Casement (PORTAL-CIRCULATION) are blood circulation to the liver, where moves blood received from the spleen, pancreas, stomach and intestines, and his liver converts glucose in the blood to glycogen and kept in reserve, come out of it in the case of need the body to him, as he turns Residue for cellular metabolism Albrootidi acid, urea, so The kidneys Bafrazha with urine.The center occupies the heart's main blood circulation. Reference is first and last a pump that receives blood and you pay to a permanent movement of vessels not only end with the end of life.Off blood from the heart, specifically the right part of it any of the right ventricle, through the pulmonary artery and pulmonary artery carrying blood saturated with carbon dioxide to the lungs Vivra to two major left and right.And branched These, in turn, to the branches reach each and every one of them to a certain lobe of the lung.And continues to branch like the branches of a tree even turned into a large network in harmony with lung Onsak (lung vesicles) Alveoles, where it is the process of purification and gas exchange.Gives blood how it surplus carbon dioxide and takes the oxygen it needs and returns through the veins, which are formed in a manner adverse to branch arteries, even to take final shape and make up four pulmonary veins carry blood saturated with oxygen to the heart, specifically the left atrium.This process is called the whole circulatory micro or small.What is different small for large session?Is essentially different from the major arteries that carry blood blue blood pregnant to carbon dioxide while carrying red blood veins purified oxygen dreamer, but in the session the major arteries that carry blood red while carrying blue blood veins.Off major blood during the session from the left ventricle through the aorta to the various parts of the body where branching artery bypass multiple names vary according to members that link to it and continue Baltafra even small branches up to every cell in the body.Up blood if, to the members of the body are all loaded with oxygen and return carrying carbon dioxide and other waste to accumulate through the veins that are formed in the same way that we have seen in the session Minor, and carry it to the heart through and Reden key are called veins Alogeoffan veines caves, one inferior vena cava vena cava inferior , gather the blood from the lower limbs to take it to the right atrium in the heart, while blood accumulates from the upper limbs by superior vena cava vena cava superior in turn also hurt in the right heart atrium.From there off to the right ventricle, where pumped through the pulmonary artery to the lungs to begin Minor new session.


It should be noted that the blood is subject during its grand to the purification process is in the kidneys, where blood is free from some of the material excreted with urine through a complex process of absorption and excretion.As is also subject to the process of purifying the other is in the liver through the cycle generic form part of the session the major, and are made through the portal vein (portal vein), which is transmitted through which blood coming from the intestines and abdominal organs other and which also carries food gained from foods that are undergoing liver where it is receive. فالكبد as we know is the chemical lab in the body.The sessions Aldmoatin Mvsoltan completely from each other only in some diseases that remain a hole or more between the wall of the atrium or the right ventricle Tsalhma Bashbahiama Aloasrin.Some of these diseases lead to congenital cyanosis, and sometimes remain the link between the pulmonary artery and the artery Alarbehr, called the ductus arteriosus, impassable which also leads to mixing of blood blue blood red.

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