blood
Definition
noun
blood chemistry or chemistry of the blood
- the substances which make up blood can be analysed in blood tests, the results of which are useful in diagnosing disease
- the record of changes which take place in blood during disease and treatment
COMMENT Blood is formed of red and white cells, platelets and plasma. It circulates round the body, going from the heart and lungs along arteries, and returns to the heart through the veins. As it moves round the body it takes oxygen to the tissues and removes waste material which is cleaned out through the kidneys or exhaled through the lungs. It also carries hormones produced by glands to the various organs which need them. The body of an average adult contains about six litres or ten pints of blood.