Advanced Biology
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Created by:
applefreak95 on February 9, 2011
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22 terms
Terms | Definitions |
|---|---|
 Viscosity | The resistance to flow and alteration of shape due to cohesion |
| Plasma | The fluid portion of the blood which is mostly water |
| Formed elements of blood | The cells and cell parts of blood produced by bone marrow |
| Erythrocytes | Red blood cells that transport oxygen in the blood |
| Leukocytes | White blood cells which perform various defensive functions in blood |
| Platelets | Cell fragments in blood which help prevent blood loss |
| Diapedesis | passage of any formed element of blood througout the blood vessel and into the tissue spaces |
| Chemotas | Attraction of cells to chemical stimuli |
| Hemopoiesis | The process by which the formed elements of blood are made in the body |
| Hemostasis | The process by which the body stops blood loss |
| Coagulation factors | Proteins in blood plasma which help iniate the blood coagulation factors |
| Antigen | any substance (as a toxin or enzyme) that stimulates the production of antibodies |
| Arteries | Blood vessels that carry blood away from the heart |
| Capillaries | Tiny, thin walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells |
| Veins | Blood vessels that carry blood back to the heart |
| Pulmonary circulation | circulation of the blood over the air sacs of the lungs |
| Systemic circulation | Circulation of the blood thorugh the other tissues of the body |
| Systolic phase | The phase of the cardiac cycle in which the ventricles contrast |
| Diastolic phase | The phase of the cardiac cycle in which the ventricles relax |
| Cardiac cycle | the complete cycle of events in the heart from the beginning of one heart beat to the beginning of the next |
| Arterioles | smallest arteries that have three tunics |
| venules | small veins that do not have three tunics but instead have only an endothelium, a basment membrane, and a few smooth muscle cells |
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