All About Blood
Blood is a mixture of cells and a watery liquid, called plasma, that the cells float in. It also contains other things like nutrients (such as sugar), hormones, clotting agents, and waste products to be flushed out of the body.
There are three kinds of cells in the blood: red blood cells, white blood cells, and platelets. Red blood cells carry oxygen from the lungs throughout the body, White blood cells help fight infection, Platelets help in clotting.
Your blood is an amazing and important part of your body. You can pump 7000 litres of blood through 100,000 kms. Of blood vessels everyday. On an average human body has about 5 litres of blood.
How does circulatory systems works ?
