Prentice hall science explorer human biology and health chapter 3
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Created by:
WhitneyThomas586 on March 28, 2012
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These flashcards are on chapter 3 vocab. in prentice hall science explorer human biology and health. They are about Circulation. Creds to Ms.Hancock, the best science teacher ever!!!! I hope they can be of use to you!! :) :D :P
-WhitneyThomas586
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24 terms
Terms | Definitions |
|---|---|
 Aorta | carries blood from the left ventricle to the body. |
| Valve | a flap of tissue that prevents blood from flowing backward. |
| Capillary | materials are exchanged between blood and the body's cells in this blood vessel |
| Platelet | cell fragments that play an important part in forming blood clots |
| Heart Attack | occurs when blood flow to part of the heart muscle is blocked |
| pulse | caused by alternating expansion and relaxation of the artery wall |
| ventricle | lower chambers of the heart |
| Pacemaker | sends out signals that make the heart muscle contract |
| Blood Pressure | is caused by the force with which the ventricles contract |
| Lymph Node | the filter lymph, trapping bacteria and other disease-fighting microrganisms in the fluid |
| Red Blood Cell |  take up oxygen in the lungs and deliver it to cells elsewhere in the body |
| Cardiovascular System | Consists of the heart, blood vessels, and blood |
| Hypertension | a disorder in which a person's blood pressure is consistently higher than normal: also called high blood pressure |
| Lymphatic System | a network of veinlike vessels that return fluid that leaks out of blood vessels to blood stream |
| plasma | the liquid part of the blood |
| diffusion | the process by which molecules move from an area of higher concentration to an area of lower concentration |
| Artery | a blood vessel that carries blood away from the heart |
| Lymph | the fluid that the lymphatic system collects and returns to the bloodstream |
| Vein | a blood vessel that carries blood back to the heart |
| Hemoglobin | an iron-containing protein that binds chemically to oxygen molecules; makes up most of red blood cells |
| White Blood Cell | A blood cell that fights disease |
| Coronary Artery | an artery that supplies blood to the heart itself |
| Artherosclerosis | a condition in which an artery wall thickens as a result of the buildup of fatty materials. |
| heart | a hollow, muscular organ that pumps blood throughout the body. |
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