* The blood, the blood vessels and the heart make up the circulatory system. This transports substances to and from the body cells.
* Plasma has blood around the cells suspended in it and transported by proteins and other chemicals around the body.
* Your red blood cells contain haemoglobin that binds to oxygen to transport it from the lungs to the tissues.
* White blood cells help to protect the body against infection.
* Platelets are cell fragments that start the clotting process at wound sites
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