WHITE BLOOD CELLS
they are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
White blood cell is another name for a leukocyte.
Blood:- Blood is a red coloured liquid which flows in blood vessels and circulates in our body.
Blood consists of four components:
★ Plasma : Plasma carries water and dissolved substances such as digested food and waste products from one part to another part in the body.
★ Red Blood Cells ( RBC ) : Red blood cells carry oxygen from lungs to all the cells of the body.
★ White Blood Cells ( WBC ) : White blood cells fight infection and protect us from diseases.
★ Platelets : Platelets help in the clotting of blood in a cut or wound.
