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Blood
Vocabulary L-Z
16
Anatomy
11th Grade
03/10/2010

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Term
LYMPHATIC VESSEL
Definition
Vessel that carries lymph.
Term
LYMPHOCYTE
Definition
Type of white blood cell characterized by agranular cytoplasm; usually constitute 20-25% of the white cell count.
Term
MEGAKARYOCYTE
Definition
Large bone marrow cell that gives rise to blood platelets.
Term
MONOCYTE
Definition
Type of white blood cell that functions as a phagocyte.
Term
NEUTROPHIL
Definition
Phagocytic white blood cell that normally constitutes 60-70% of the white blood cell count.
Term
OSMOTIC PRESSURE
Definition
The amount of pressure needed to stop osmosis; the potential pressure of a solution caused by nondiffusible solute particles in the solution.
Term
PATHOGEN
Definition
Disease-causing agents, such as bacteria and viruses.
Term
PLASMA
Definition
Liquid portion of blood.
Term
PLATELET
Definition
Cell-like disks formed from fragmentation of megakaryocytes that initiate blood clotting.
Term
PROTHROMBIN
Definition
Plasma protein made by the liver that must be present in the blood before clotting can occur.
Term
PROTHROMBIN ACTIVATOR
Definition
Enzyme that catalyzes the transformation of the precursor prothrombin to the active enzyme thrombin.
Term
RED BLOOD CELL
Definition
Nonnucleated, hemoglobin-containing blood cell capable of carrying oxygen; erythrocyte.
Term
STEM CELL
Definition
A precursor cell.
Term
THROMBIN
Definition
Enzyme derived from prothrombin that converts fibrinogen to fibrin threads during blood clotting.
Term
TISSUE FLUID
Definition
Fluid found around tissue cells that contains molecules that enter from or exit to the capillaries.
Term
WHITE BLOOD CELL
Definition
Several types of colorless, nucleated blood cells that, among other functions, resist infection; leukocytes.
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