main job of red blood cells, or erythrocytes, is to carry oxygen from the lungs to
body tissues and carbon dioxide as a waste product, away from the tissues and back
the lungs. Hemoglobin (Hgb) is an important protein in the red blood cells that carries
oxygen from the lungs to all parts of our body.
main job of white blood cells, or leukocytes, is to fight infection. There are several
types of white blood cells and each has its own role in fighting bacterial, viral,
fungal, and parasitic infections. Types of white blood cells that are most important
helping protect the body from infection and foreign cells include the following:
Help heal wounds not only by fighting infection
but also by ingesting matter, such as dead cells, tissue debris, and old red blood
Protect you from foreign bodies that enter the blood stream, such as
Are involved in the protection against mutated cells, such as cancer.
main job of platelets, or thrombocytes, is blood clotting. Platelets are much smaller
size than the other blood cells. They group together to form clumps, or a plug, in
hole of a vessel to stop bleeding.