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Platelets: Platelets also called thrombocytes, say: THROM-buh-sytes are tiny oval-shaped cells that help in the clotting process. When a blood vessel breaks, platelets gather in the area and help seal off the leak.

Problems affecting white blood cells

Platelets work with proteins called clotting factors to control bleeding inside our bodies and on our skin. Platelets survive only about 9 days in the bloodstream and are constantly being replaced by new platelets made by the bone marrow. With each heartbeat, the heart pumps blood throughout our bodies, carrying oxygen to every cell.

After delivering the oxygen, the blood returns to the heart. The heart then sends the blood to the lungs to pick up more oxygen. This cycle repeats over and over again. The circulatory system is made up of blood vessels that carry blood away from and toward the heart.

Blood cell formation

As the heart beats, you can feel blood traveling through the body at pulse points — like the neck and the wrist — where large, blood-filled arteries run close to the surface of the skin. Sometimes medicine can be given to help a person make more blood cells. And sometimes blood cells and some of the special proteins blood contains can be replaced by giving a person blood from someone else.

People can get transfusions the part of blood they need, such as platelets, RBCs, or a clotting factor. When someone donates blood, the whole blood can be separated into its different parts to be used in these ways. The red blood cell survives on average only days. Red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled. Blood appears red because of the large number of red blood cells, which get their color from the hemoglobin.

The percentage of whole blood volume that is made up of red blood cells is called the hematocrit and is a common measure of red blood cell levels. White blood cells protect the body from infection.

Blood Groups and Red Cell Antigens [Internet].

They are much fewer in number than red blood cells, accounting for about 1 percent of your blood. The most common type of white blood cell is the neutrophil, which is the "immediate response" cell and accounts for 55 to 70 percent of the total white blood cell count. Each neutrophil lives less than a day, so your bone marrow must constantly make new neutrophils to maintain protection against infection. Transfusion of neutrophils is generally not effective since they do not remain in the body for very long. The other major type of white blood cell is a lymphocyte.

There are two main populations of these cells. T lymphocytes help regulate the function of other immune cells and directly attack various infected cells and tumors. B lymphocytes make antibodies, which are proteins that specifically target bacteria, viruses, and other foreign materials. Unlike red and white blood cells, platelets are not actually cells but rather small fragments of cells.

Blood and the cells it contains - Blood Groups and Red Cell Antigens - NCBI Bookshelf

Platelets help the blood clotting process or coagulation by gathering at the site of an injury, sticking to the lining of the injured blood vessel, and forming a platform on which blood coagulation can occur. This results in the formation of a fibrin clot, which covers the wound and prevents blood from leaking out.

Types Of Blood Cells

Fibrin also forms the initial scaffolding upon which new tissue forms, thus promoting healing. Conversely, lower than normal counts can lead to extensive bleeding. A complete blood count CBC test gives your doctor important information about the types and numbers of cells in your blood, especially the red blood cells and their percentage hematocrit or protein content hemoglobin , white blood cells, and platelets. The results of a CBC may diagnose conditions like anemia , infection, and other disorders. Click to Enlarge. Red blood cells are round with a flattish, indented center, like doughnuts without a hole.

Hemoglobin is the protein inside red blood cells that carries oxygen.

Red blood cells also remove carbon dioxide from your body, transporting it to the lungs for you to exhale. Red blood cells are made inside your bones, in the bone marrow.

They typically live for about days, and then they die. Foods rich in iron help you maintain healthy red blood cells.

What are red blood cells?

Vitamins are also necessary to build healthy red blood cells. These include vitamin E, found in foods such as dark green vegetables, nuts and seeds, mango, and avocados; vitamins B2, B12, and B3, found in foods such as eggs, whole grains, and bananas; and folate, available in fortified cereals, dried beans and lentils, orange juice, and green leafy vegetables.

Most people don't think about their red blood cells unless they have a disease that affects these cells. Problems with red blood cells can be caused by illnesses or a lack of iron or vitamins in your diet. Some diseases of the red blood cells are inherited.