1409 BIOLOGY 01 FiB01 Circulatory System.doc

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1 01 Circulatory System Circulatory system - takes oxygen and nutrients to all cells and removes carbon dioxide and waste products. Open circulatory system - blood baths the organs directly; no blood vessels; insects. Closed circulatory system - blood is confined to blood vessels; humans . Arteries - carry blood away from heart. Arterioles – small arteries. Capillaries - where oxygen and carbon dioxide exchange takes place. Venules – small veins. Veins - carry blood to the heart. Valves - keep blood in veins flowing towards the heart. Varicose veins - caused by the failure of vein valves. Blood - made up of red blood cells, white blood cells, platelets, plasma, and things that are dissolved in plasma. Plasma - fluid in the bloodstream. Superior vena cava - 2nd largest vein that brings in deoxygenated blood from upper body. Inferior vena cava - largest vein that brings in deoxygenated blood from lower body. Right atrium - receives deoxygenated blood; upper chamber on right side.
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  • Spring '16
  • Christina Snaples
  • Biology

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