Different components of human blood are replaced at different rates. According to the AABB, a non-profit organization that represents organizations that conduct blood transfusions, plasma is replaced within a few hours of a blood donation while the red blood cells take a few weeks to replace. Doctors usually only remove about one pint of blood during a transfusion, which represents about 10 percent of the total blood volume.Know More
According to Palomar Community College, human blood contains approximately 4,000 different components. These are replaced on a regular basis by different processes in the body. For example, bone marrow produces stem cells which in turn produce red blood cells. Red blood cells live for about 4 months before they are removed and recycled by the spleen. White blood cells, by contrast, only last an average of 18 to 36 hours before they are removed. Occasional white blood cells last for up to 1 year before they are removed. Platelets, which help to form clots, only survive about 10 days before they are removed from the blood stream.
People are usually able to donate blood every 56 days. Blood donations are an important component of health care systems because to date, no synthetic substitute exists, according to the AABB.Learn more about Blood
Blood has four components: plasma, red blood cells, white blood cells and platelets. Plasma is the liquid component of blood, in which the other three components are suspended. Red blood cells comprise about 40 percent of the blood's volume, while plasma makes up more than half of the volume.Full Answer >
The composition of blood consists of various components, such as plasma, white blood cells, red blood cells and platelets. Plasma, which is the fluid component that contains the different blood cells and substances of whole blood, represents 55 percent of whole blood.Full Answer >
Cellular components of blood include red corpuscles, platelets and five kinds of white corpuscles, according to SUNY Downstate Medical Center. The components are suspended in plasma. Red corpuscles, known as erythrocytes, and platelets, known as thrombocytes, perform most functions that occur within blood. Platelets play a key role in blood clotting.Full Answer >
Blood is responsible for transporting oxygen, carbon dioxide, nutrients, hormones and proteins in the body, according to KidsHealth. The blood also carries glucose, ions, amino acids and waste products, such as urea, through the body. Red blood cells carry hemoglobin, a chemical that gives blood its red color.Full Answer >