How your body replaces blood? The average adult has around 10 pints of blood (roughly 8% of your body weight).  Making a blood donation uses about 1 pint, after which your body has an amazing capacity to replace all the cells and fluids that have been lost. Red blood cells Take red cells. Millions of them are being made and dying ev…

Blood is made mostly of plasma, but 3 main types of blood cells circulate with the plasma: Platelets  help the blood to clot. Clotting stops the blood from flowing out of the body when a vein or artery is broken. Platelets are also called  thrombocytes . Red blood cells  carry oxygen. Of the 3 types of blood cells, red blood cel…

Blood Donation  Blood donation is a voluntary procedure that can help save the lives of others. There are several types of blood donation. Each type helps meet different medical needs. Blood donation benefits everyone The health benefits of donating blood are considerable—but of course, the most important part of the process is help…

White Blood Cells: Hi all this is the one minute video lesson about the white blood cells... Kids will enjoy this video lesson..

Blood is a constantly circulating fluid providing the body with nutrition, oxygen, and waste removal. Blood is mostly liquid, with numerous cells and proteins suspended in it, making blood "thicker" than pure water. The average person has about 5 liters (more than a gallon) of blood. About half of blood volume is composed …