The function of white blood cells is to carry oxygen to and from body cells.Is this true?
342771
This is false. \nWhite blood cells, also known as leukocytes, are the body's defensive cells and are part of the immune system. There are different types of leukocytes, including B lymphocytes and T lymphocytes.\nB lymphocytes msture in the Bursa of Fabricius. {hence their name}\nand also include two types:\n      a) Memory B cell- these cells "remember" how to make a certain antibody in response to a particular pathogen (antigen).\n      b) Plasma B cell- secrete antibodies in order to destroy antigens. antibodies bind the antigens together to make the easier targets for the phagocytes (which "eat" them up.)\n\nT lymphocytes mature in the thymus {that's what the T stands for}. There are three kinds of T cells:\n     a)Cytotoxic T cells destroy infected cells. \n     b) Helper T cells, when activated, they proliferate and secrete cytokines that regulate or "help" effector lymphocyte function. \n     c) Regulatory T cells, also known as suppressor T cells, suppress activation of the immune system and maintain immune system homeostasis. If these fail, you get an autoimmune disease (where the immune system attacks itself!)\n\n\nOn the other hand, Red blood cells, also known as eythrocytes, carry oxygen. They have hemoglobin, which is a globular protein containing four subunit proteins found in the blood of vertebrates (organisms with a backbone). The heme group has iron in it, and this is where the oxygen binds to. This also gives blood its red color.\nRBCS are circulated by the blood.\ntheir biconcave shape (like they have a dent on both sides...) let them carry oxygen more efficiently as well. \nA disease of this, called sickle cell anemia, is when RBCs are sickle shaped and do not carry oxygen efficiently, resulting in a tired person. \nyeah.\nhave a nice day!
211555
Arteries\n\nThere are two major kinds of blood vessels, veins and arteries. arteries run from the heart to all the other body parts, and the heart pumps fresh blood into the arteries. All the cells in the body draw nourishment and oxygen from this blood and leave out waste and carbon dioxide. The veins then carry this impure blood back to the heart. The blood that goes to the lungs brings back extra oxygen and the liver and the small intestine play a major role in introducing nourishment into the blood stream
1081075
Almost all white blood cells are produced by stem cells that reside in the bone marrow of many of the bones in the normal individual.
418844
To fend off the pathogen, your body produces white blood cells.  These cells target the disease and work to kill it off.
159685
You have to understand your white blood cells are like your fighters. They fight off infection. So if you have an increased amount of them, it means your body is producing a lot of them to get rid of the infection.
211224
The Respiratory system has its central processing functions in the lungs.  The lungs compose of thousands of little "sacks" which expand and contract to breath in and out.  In the lungs oxygen is transferred to the red blood cells which contain haemoglobin.  The haemoglobin is very good at storing/transporting oxygen.  This travels around the circulatory system, and the oxygen rich red blood cells visit cappillaries all throughout the body in order to keep the body functions alive.  The deteriorating effects of Oxygen, however, are what cause us to age.  Oxygen is in fact our source of life, and the reason we eventually die.\n\nThe digestive system is the source for all of our growth.  In order to become larger, we must ingest complex chemical compounds and convert these into proteins.  Energy gained from digestion allows us to function internally as well as externally.  Our digestive system allows the heart to pump and function the circulatory system.  The circulatory system is supplied by both the digestive and respiratory systems and transports Oxygen/proteins/white blood cells, etc. around the body.  \n\nSo these three systems are related in that simple way, but there are many other ways to relate the work the digestive and circulatory system do that affect the respiratory system.
386051
erythrocytes (red blood cells)\n\nneutrophil granulocytes (the most abundant type of white blood cells and form an integral part of the immune system)\n\neosinophil granulocytes (white blood cells that are responsible for combating infection by parasites in the body)\n\nlymphocytes (a type of white blood cell involved in the human body's immune system that plays an important and integral part of the body's defenses)\n\nthrombocytes (are the blood cell fragments that are involved in the cellular mechanisms that lead to the formation of blood clots)\n\nother blood components: fluid plasma
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Neutrophils are one of five types of white blood cells present in human blood.  The others are Eosinophils, Basophils, Lymphocytes and Monocytes.  Neutrophils, also known as segs generally show an increase in the blood in response to bacterial infection, they are in fact bacteriophages which mean they actually ingest bacteria.  This is one of the body's main defenses against bacterial infection.
562728
when we breath oxygen it enter in to our blood which is called oxyhaemoglobin.it helps in circulation the fresh blood through entire body through artillaries and deocygenated blood goes again for circulation in heart through veins.
512388
Spleen has 3 major functions: 1) Filter old red blood cells. As RBC's age they get less flexible and get caught in the spleen. \n2) Filter out bacteria that have been coated with antibodies. Certain bacteria have a capsule around them that makes it easier for them to get into the blood stream. When the bacteria are coated with antibodies, White blood cells in the spleen digest them. People without a spleen are more prone to serious infections by such bacteria. Streptococcus pneumoniae is one such bacteria. This is why people without a spleen should be sure to have a pneumonia vaccine every 5 years or so. \n3) Store red blood cells. In the event of a major blood loss, the RBC factory, the bone marrow, cannot produce cells quickly enough so the spleen releases these cells to help counter the loss until the marrow production can kick in. \nNote: The spleen produces RBC's in fetal life, and perhaps early infanthood, but in the child/adult, it does not have a big role in making RBC's.\n\nSplenic rupture results in a massive bleeding which is lethal if not controlled. Other splenic trauma can be observed if not too serious, such as a Grade 1 laceration.
546092
Red blood cells are the most common type of blood cell and are the vertebrate body's principal means of delivering oxygen from the lungs or gills to body tissues via the blood.\n\nRed blood cells are also known as RBCs or erythrocytes (from Greek erythros for "red" and kytos for "hollow", with cyte nowadays translated as "cell"). A schistocyte is a red blood cell undergoing fragmentation, or a fragmented part of a red blood cell.\n\n\nThe diameter of a typical human erythrocyte disk is 6–8 µm; they are thus much smaller than most other human cells. A typical erythrocyte contains about 270 million hemoglobin molecules, with each carrying four heme groups.\n\nAdult humans have roughly 2–3 × 1013 red blood cells at any given time (women have about 4 million to 5 million erythrocytes per cubic millimeter (microliter) of blood and men about 5 million to 6 million; people living at high altitudes with low oxygen tension will have more). Red blood cells are thus much more common than the other blood particles: There are about 4,000–11,000 white blood cells and about 150,000–400,000 platelets in a cubic millimeter of human blood. The red blood cells store collectively about 3.5 grams of iron; that's more than five times the iron stored by all the other tissues combined.\n\nThe process by which red blood cells are produced is called erythropoiesis. Erythrocytes are continuously being produced in the red bone marrow of large bones. (In the embryo, the liver is the main site of red blood cell production.) The production can be stimulated by the hormone erythropoietin (EPO), which is used for doping in sports. Erythrocytes develop in about 7 days and live a total of about 120 days. The aging cells swell up to a sphere-like shape and are engulfed by phagocytes, destroyed and their materials are released into the blood. The main sites of destruction are the liver and the spleen. The heme constituent of hemoglobin is eventually excreted as bilirubin.\n\nThe blood types of humans are due to variations in surface glycoproteins of erythrocytes.\n\nRed blood cells can be separated from blood plasma by centrifugation. During plasma donation, the red blood cells are pumped back into the body right away, and the plasma is collected. Some athletes have tried to improve their performance by doping their blood: First about 1 liter of their blood is extracted, then the red blood cells are isolated, frozen and stored, to be reinjected shortly before the competition. (Red blood cells can be conserved for 5 weeks at −78 °C.) This practice is hard to detect but may endanger the human cardiovascular system which is not equipped to deal with blood of the resulting higher viscosity\n\n\nDiseases and diagnostic tools\n \nAffected by Sickle-cell disease, red blood cells alter shape and threaten to damage internal organs.Blood diseases involving the red blood cells include:\n\nAnemias (or anaemias) are diseases characterized by low oxygen transport capacity of the blood, because of low red cell count or some abnormality of the red blood cells or the hemoglobin. \nIron deficiency anemia is the most common anemia; it occurs when the dietary intake or absorption of iron is insufficient, and hemoglobin, which contains iron, cannot be formed \nSickle-cell disease is a genetic disease that results in abnormal hemoglobin molecules. When these release their oxygen load in the tissues, they become insoluble, leading to mis-shaped red blood cells. These sickle shaped red cells are rigid and cause blood vessel blockage, pain, strokes, and other tissue damage. Specifically, Sickle-cell disease is due to a mutation of the Glu-6 residue to Val-6 on the outside of the hemoglobin protein; this change from a polar, charged amino acid to a hydrophobic amino acid causes the structural change seen in Sickle red blood cells. \nThalassemia is a genetic disease that results in the production of an abnormal ratio of hemoglobin subunits
1146799
"The spleen is a ductless, vertebrate gland that is closely associated with the circulatory system, where it functions in the destruction of old red blood cells in holding a reservoir of blood. It is regarded as one of the centres of activity of the reticuloendothelial system. Until recently, the purpose of the spleen was not known. It is increasingly recognised that its absence leads to a predisposition to certain infections."
675906
The spleen filters blood and gets rid of the old and dying red blood cells.  The spleen also hold extra blood within it.\n\nBone marrow is where red blood cells are produced.
273130
When your body finds cells that it does not recognize as its own it will attack and break them down. This is the purpose of white blood cells, to find foreign cells such as viruses and bacteria to eliminate them.
223130
I know that blood contains hemoglobin, plasma, and platelets...platelets act as primary function in the clotting process.  hemoglobin contains oxygen to make new blood cells. plasma basically just takes up space.
1036110
From my previous answer I presume.  Well, the simple fact that they do not have any nucleus limits them to a 3 month lifespan.  A RBC is something like a transport vesicle.  It transports oxygen because of the hemoglobin present, not because of the nucleus.\n\nIt is able to move around due to blood pressure created by the heart pumping blood to the rest of the body.  It literally goes with the flow.
197825
Blood's role in the body is three fold: First, it acts as a transort system for nurtients and such to reach the different parts of the body. Secondly as a defence system, where lymphocytes are active in controlling pathogens that enter the body (such as bacteria, viruses, fungi, etc). Lastly, the blood acts as a sealant. When there is damage to the body, the platelets in the blood seal up the wound.\n\nBlood is very important to the body. Without it, you wouldn't exist.