Hematology is concerned with all diseases of the blood, including cancer of the blood (leukemia, lymphoma, and myeloma).
Blood is composed of both plasma and cells:
Plasma — Is liquid and contains proteins and other nutrients like protein and electrolytes.
Cells — There are three different types of cells:
- Red blood cells — It’s main job is to carry OXYGEN to the body.
- White blood cells — Fight infection and are the “soldiers” of the body. The body has two main types of white cells that is uses as “weapons” against infection: neutrophils and lymphocytes.
- Platelets — Small cells that have the job of clotting blood by grouping together to seal off bleeding.