Ohio School of Phlebotomy CH. 3 & 4/ Q&A
2024-2025.
serum - Answer: Plasma with the fibrin removed; 30-minute clot time; darker
yellow in color
Hemopoiesis - Answer: producer of blood cells (marrow)
Leukocytes - Answer: white blood cells
Reticulocyte - Answer: immature erythrocyte
Neutrophils - Answer: Phagocyte; 1st responders to bacterial infections
Eosinophils - Answer: Attack parasites and certain infections
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, Basophils - Answer: Carry antihistamine ; least numerous
Monocytes - Answer: Largest of all WBCs; uses phagocytosis to attack and destroy
foreign cells; phagocyte
Phagocyte - Answer: Type of cell capable of engulfing and absorbing bacteria and
other small cells
Lymphocytes - Answer: T Cells- attack pathogen directly ; B Cells- release
immunoglobulins that produce antibodies
Hemostasis - Answer: Ability to clot and close an open wound
Vasoconstriction - Answer: the vessel that was damaged narrows in order to slow
the blood flow area
CBC - Answer: complete blood count
Why is order of draw important? - Answer: To prevent contaminating later tubes
with the additive from previous tubes.
Evacuated tubes - Answer: Tubes with air removed to produce a vacuum
Anticoagulant - Answer: prevents blood clotting
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