Circulatory System
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17 terms
Terms | Definitions |
|---|---|
 oxygen | the right atrium pumps blood into the right ventricle where a large artery takes it to the lungs to pick up OXYGEN and release carbon dioxide |
| aorta | the large trunk artery that carries blood from the left ventricle of the heart to branch arteries |
| plasma | liquid portion of blood made up of water, dissolved salts, proteins, and other substances |
| capillaries | the smallest blood vessels which connect the smallest arteries with the smallest veins. Nourishment and fluid noramlly trapped in thick walled arteries and veins can easily pass through the delicate walls of the capillaries |
| valve | flap of tissue in the heart that prevents blood from flowing in the wrong direction |
| white blood cells | disease fighting cells in blood |
| circulatory system | The purpose of the CIRCULATORY SYSTEM is to transport materials through the body |
| blood | the word circulation comes from the word circle. The pathway of BLOOD is curcular, flowing from the heart to other organs and back to the heart |
| vena cava | either of two large veins that return oxygen-depleted blood to the right atrium of the heart |
| red blood cells | Cells that are primarily responsible for transporting oxygen and carbon dioxide through the body. |
| blood vessels | tubelike structures that carry blood throughout the body |
| ventricle | a chamber of the heart that receives blood from an atrium and pumps it to the arteries |
| platelets | tiny, disk-shaped bodies in the blood, important in blood clot formation |
| artery | a major thoroughfare that bears important traffic |
| atrium | upper chamber of the heart that receives and holds blood that is about to enter the ventricle |
| heart | a hollow, muscular organ that pumps blood throughout the body |
| veins | blood vessels that carry blood back to the heart |
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