• The normal pH of human arterial blood is approximately 7.40 (normal range is 7.35 – 7.45) a weak alkaline solution.
• Blood is about 7% of the human body weight, so the average adult has a blood volume of about 5 litres, of which 2.7- 3 litres is plasm.
• Human blood density is around 1060 kg/m³. The combined surface area of all the red cells in the human body would be roughly 2,000 times as great as the body’s exterior surface.
• Blood cells are degraded by the spleen and the Kupffer cells in the liver.
• Hemophilia is a genetic illness that causes dysfunction in one of the blood’s clotting mechanisms.
• Blood donors can donate as frequently as every 56 days.
• On average, a hip replacement typically uses one unit of blood, cardiace bypass 2 units, a heart transplant 2 units, and a liver transplant 10 units.
• About 400 gallons of blood flow through your kidneys in one day
• Approximately 4 million patients receive a blood transfusion each year
• Blood is perishable; red blood cells must be used within 42 days. Platelets must be used within 5 days.
• The average adult body contains approximately 10-12 pints of blood.