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Hematocrit
Hematocrit The volume percentage of erythrocytes in whole blood.
RELATED TERMS--------------------------------------
Blood
The life-maintaining fluid which is made up of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets; blood circulates through the body's heart, arteries, veins, and capillaries; it carries away waste matter and carbon dioxide, and brings nourishment, electrolytes, hormones, vitamins, antibodies, heat, and oxygen to the tissues.
SIMILAR TERMS--------------------------------------
Hemabate
Hemabate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): carboprost tromethamine.
Hemagglutination
The agglutination of red blood cells; may be immune as a result of specific antibody either for red blood cell antigens per se or other antigens which coat the red blood cells, or may be nonimmune as in hemagglutination caused by viruses or other microbes.
Hemagglutinin
A substance, antibody or other, that causes hemagglutination.
Hemangio
Blood vessel.
Hemangiosarcoma
Malignant tumor of a blood vessel.
Hematemesis
Vomiting blood.
Hematology
The study and treatment of blood and blood-forming tissues.
Hematoma
Swelling of effused blood beneath tissue surface.
Hematopoietic stem cell
A stem cell from which all red blood cells, white blood cells, and platelets develop.
Hematuria
The presence of blood in the urine.
PREVIOUS AND NEXT TERMS--------------------------------------
Hue
The perception of color.
Hyperacuity
Psychophysical tasks involving judgements of relative position that are about ten times finer than the separation of bars at the grating acuity limit.
Hypercolumn
A set of columns in the primary visual cortex (V1) that contains columns responsive to lines of all orientations from a particular region of space and for both eyes.
Hypercomplex cells
A third category of striate cells identified by Hubel and Wiesel that have since been classified as subsets of simple and complex cells. They posses inhibitory zones at one or both ends of oriented excitatory regions, thereby responding to bars of preferred orientation only if they are not too long.
Hematemesis
Vomiting blood.
Hematocrit
Hemangio
Blood vessel.
Hemangiosarcoma
Malignant tumor of a blood vessel.
Hereditary
Transmitted from parent to offspring; derived from ancestry.
Heterocellular
Composed of more than one type of cell.
Histiocyte
A large, phagocytic cell of the reticuloendothelial system; a macrophage.
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