RED BLOOD CELLS 

Red blood cells, also referred to as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues—via blood flow through the circulatory system.


The main purpose of red blood cells is to provide a normal oxygen supply to the body’s tissues and organs.Like other blood cells, erythrocytes are produced in the bone marrow – the spongy part in the center of the bone.

Red blood cells make up about 45 percent of the blood (the remainder is 55% plasma and less than 1% consists of other cells: thrombocytes and leukocytes).