When oxygen-rich blood from the lungs is pumped to the rest of the body, so the cells can use the oxygen - oxygen - poor blood is then turned to the heart is ??? A. Circulation B. Heart circulation C. Pulmonary circulation D. Systematic circulation

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Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.