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Learn Biology: Blood Cells of the Human Body

Check out Bas Rutten's Liver Shot on MMA Surge: Mahalo biology expert Mary Poffenroth talks about the human body's blood cells. Blood cells of the human body, along with plasma, make up blood. Blood is found in everyone: 1 to 1.5 gallons of it per person. cells comprise about half the volume of blood. cells are produced in the bone marrow and consist of three types: red blood cells, white blood cells and platelets. Each of the blood cells has a different function. The study of these cells can help doctors in diagnosing and treating diseases. Blood tests include complete blood counts, blood cultures, Coomb's tests or others that a specific disease may require. conditions that involve an imbalance of blood cells include lymphoma, anemia, stroke and heart attack. Red Blood Cells --------------------------------------------------------------------- Red blood cells make up 45 percent of the volume of blood and are the most numerous of the blood cells. biological name is?erythrocytes, and they appear as bright red disks that are concave on both sides.?Red blood cells are very flexible so that they can fit through all the various-sized vessels throughout the body. The red blood cells functions as carriers. With the help of the hemoglobin attached to them, the red blood cells carry oxygen from the lungs to all the areas of the body. They also carry carbon dioxide back to the lungs so it can be expelled.?The test used to determine the number of blood cells in the body is the hematocrit. White Blood Cells --------------------------------------------------------------------- White blood cells are larger than red blood cells and are not very numerous in the body until a person becomes sick.? The biological name for white blood cells is leukocytes.? The white blood cells fight infection in the body that may be introduced from outside sources.? They also attack mutated cells or tumors within the body.? White blood cells also make antibodies in response to bacteria?and?viruses. Types of white blood cells include granulocytes, lymphocytes, and monocytes. Platelets --------------------------------------------------------------------- Platelets are the third type of blood cell, and may be called thrombocytes. are small pieces of cells that float in the plasma of the blood.?When a part of the body is injured, the platelets will help reduce and stop bleeding by gathering at the site of the injury.?Once the platelets in the area reach the site of the injury they release chemical signals which will bring other clotting factors. there are too many platelets in an area, unnecessary clotting can occur.?The result of this may be heart attacks or strokes. If there are not enough platelets in the body, a simple cut could result in the loss of a dangerous amount of blood. Read more by visiting our page at:
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