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3.2 The Circulatory System

3.2 The Circulatory System. Text book pages 68-70. Vocabulary:. Arteries Veins Capillaries Atria Ventricle. Circulatory system. Brings every cell oxygen No cell is m ore than 2 cells away from a blood vessel. WOW!!. We have 60 trillion cells (60, 000, 000, 000, 000). 1, 000, 000.

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3.2 The Circulatory System

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  1. 3.2 The Circulatory System Text book pages 68-70

  2. Vocabulary: • Arteries • Veins • Capillaries • Atria • Ventricle

  3. Circulatory system • Brings every cell oxygen • No cell is more than 2 cells away from a blood vessel

  4. WOW!! • We have 60 trillion cells (60, 000, 000, 000, 000)

  5. 1, 000, 000

  6. 100, 000, 000

  7. 1, 000, 000, 000

  8. 1, 000, 000, 000, 000

  9. WOW WOW • We have 96 000 km of blood vessels (the earth is 40, 075.16 km around…. So that is MORE then twice around the earth!!

  10. Circulation • Blood in vessels carry: • O2 and nutrient fluids to the cells • CO2 and waste away from cells • 3 main types of vessels: • Arteries: carry blood away from heart • Veins: carry blood to the heart • Capillaries: smallest vessel (size of 1 RBC)

  11. Our Heart • 4 chambers • Two atria • Receive blood into heart • Top or heart • Two ventricles • Pumps blood away from hearth • Bottom of heart • Stronger, more muscular

  12. Flow of blood through the heart: • Veins (deoxygenated blood from body) • Right atrium (RA) • Right ventricle (RV) • Lungs (get exchange CO2gas for O2gas at the alveoli) • Left atrium (LA)(oxygenated blood form lungs • Left ventricle (LV) • Aorta • Body

  13. Circulation song • http://www.youtube.com/watch?v=LqhvmUEdOYY&p=9C8E1219DB4742B9&index=21

  14. A one-way flow • Valves = one way doors • Found between RA and RV, and LA and LV • Ventricles and arteries • In veins

  15. Our heart beat • “LUBB” “DUBB” • “LUBB” = ventricles contracting and closing valves between Atria and Ventricles • “DUBB” valves closing between the arteries and the ventricles

  16. Heart Beat animation: http://www.youtube.com/watch?v=AOiyjNFB0as

  17. Heart video • http://www.youtube.com/watch?v=S3vY5oyXmeI

  18. Circulation song • http://www.youtube.com/watch?v=LqhvmUEdOYY&p=9C8E1219DB4742B9&index=21

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