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Answer:
1. An individual blood cell takes about 60 seconds to make a complete circuit of the body.
2. By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute.)
3. Each square inch of human skin consists of twenty feet of blood vessels.
4. It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.
5. There are four main Blood types: A, B, AB and O and each Blood type is either Rh positive or negative. Blood types in the US - Type O positive 38.4%, O negative 7.7%, A positive 32.3%, A negative 6.5%, B positive 9.4%, B negative 1.7%, AB positive 3.2%, AB negative 0.7%. The most common blood type in the world is Type O. The rarest, Type A-H, has been found in less than a dozen people since the type was discovered.
6. There are 60,000 miles of blood vessels in the human body.
7. Your brain uses 15 percent of the body's blood supply.
8. The circulation of blood through the body:- Starting in the right atrium, the blood flows through the tricuspid valve to the right ventricle. Here it is pumped out the pulmonary semilunar valve and travels through the pulmonary artery to the lungs. From there, blood flows back through the pulmonary vein to the left atrium. It then travels through the mitral valve to the left ventricle, from where it is pumped through the aortic semilunar valve to the aorta. The aorta forks, and the blood is divided between major arteries which supply the upper and lower body. The blood travels in the arteries to the smaller arterioles, then finally to the tiny capillaries which feed each cell. The (relatively) deoxygenated blood then travels to the venules, which coalesce into veins, then to the inferior and superior venae cavae and finally back to the right atrium where the process began.
2. By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute.)
3. Each square inch of human skin consists of twenty feet of blood vessels.
4. It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.
5. There are four main Blood types: A, B, AB and O and each Blood type is either Rh positive or negative. Blood types in the US - Type O positive 38.4%, O negative 7.7%, A positive 32.3%, A negative 6.5%, B positive 9.4%, B negative 1.7%, AB positive 3.2%, AB negative 0.7%. The most common blood type in the world is Type O. The rarest, Type A-H, has been found in less than a dozen people since the type was discovered.
6. There are 60,000 miles of blood vessels in the human body.
7. Your brain uses 15 percent of the body's blood supply.
8. The circulation of blood through the body:- Starting in the right atrium, the blood flows through the tricuspid valve to the right ventricle. Here it is pumped out the pulmonary semilunar valve and travels through the pulmonary artery to the lungs. From there, blood flows back through the pulmonary vein to the left atrium. It then travels through the mitral valve to the left ventricle, from where it is pumped through the aortic semilunar valve to the aorta. The aorta forks, and the blood is divided between major arteries which supply the upper and lower body. The blood travels in the arteries to the smaller arterioles, then finally to the tiny capillaries which feed each cell. The (relatively) deoxygenated blood then travels to the venules, which coalesce into veins, then to the inferior and superior venae cavae and finally back to the right atrium where the process began.
Contributor:
DJGnome
DJGnome
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