what materials are transported by blood?
 One of the functions of blood is to transport materials around the body. White blood cells and platelets are part of the body's immune system, but plasma and red blood cells are involved in transport. Plasma is a straw-coloured liquid. It transports dissolved substances around the body, including hormones, nutrients, such as water, glucose, amino acids, minerals and vitamins, waste substances, such as carbon dioxide and urea. 