The basic information about human blood

About 7 to 8 percent of your total body weight is blood.

percentage of platelets in blood

Different groups of organisms use different proteins. Anemia can also be due to a genetic disorder in which the red blood cells simply do not function effectively.

In humans, blood is pumped from the strong left ventricle of the heart through arteries to peripheral tissues and returns to the right atrium of the heart through veins.

The exact percentages vary depending whether it is arterial or venous blood. Unlike hemocyanin and hemoglobin, hemovanadin is not an oxygen carrier.

composition of blood

The platelets in blood enable the clotting, or coagulation, of blood. Production of red blood cells is controlled by erythropoietin, a hormone produced primarily by the kidneys.

There are two main classes of cells, the B cells that mature in the bone marrow, and the T cells that mature in the thymus gland.

Blood cells

What Are the Types of Blood Cells? However, while the lack of a nucleus makes a red blood cell more flexible, it also limits the life of the cell as it travels through the smallest blood vessels, damaging the cell's membranes and depleting its energy supplies. Dehydration can reduce the blood volume by reducing the water content of the blood. It is moved to the right in higher acidity more dissolved carbon dioxide and to the left in lower acidity less dissolved carbon dioxide About Thrombocytopenia is a condition of low levels of platelets and carries an increased risk of bleeding. Hemocyanin , a copper -containing protein chemically unlike hemoglobin, is found in some crustaceans. Blood volume is rapidly replaced after blood loss; within hours, plasma volume is restored by movement of extravascular fluid into the circulation. Additional return flow may be generated by the movement of skeletal muscles , which can compress veins and push blood through the valves in veins toward the right atrium.

Either way is totally fine. For this reason, the partially deoxygenated blood from a vein is darker than oxygenated blood from an artery.

Blood definition

There are several types of WBCs, and their life spans vary from hours to years. The white blood cell count the number of cells in a given amount of blood in someone with an infection often is higher than usual because more WBCs are being made or are entering the bloodstream to battle the infection. Sponges and coelenterates e. The osmotic effect of serum albumin retains fluid within the circulation, opposing the hydrostatic forces that tend to drive the fluid outward into the tissues. The stem cells develop into platelet precursors called megakaryocytes that "shed" platelets into the bloodstream. Lymphocytes consist of B cells and T cells Lymphocytes are round cells that contain a single, large round nucleus. People can get transfusions the part of blood they need, such as platelets, RBCs, or a clotting factor. Platelets help blood to clot Platelets are irregularly shaped fragments of cells that circulate in the blood until they are either activated to form a blood clot or are removed by the spleen. Blood is both a tissue and a fluid. As the name suggests, it is a count of the different types of cells found in the blood. Plasma is mostly water that is absorbed from ingested food and drink by the intestines.

After a fatty meal, plasma transiently appears turbid. Platelets, or thrombocytes: These interact with clotting proteins to prevent or stop bleeding.

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Components of blood (article)