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Cardiovascular system or the circulatory system

This presentation was made for year 9 students.

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Cardiovascular system or the circulatory system

  1. 1. The transport system of the body
  2. 2. Function: transports oxygen, nutrients, hormones, and cellular waste products throughout the body.
  3. 3. The Heart
  4. 4. The Heart a muscular pumping organ located between the lungs behind the sternum. It is the body’s hardest- working organ and only about the size of a closed fist.
  5. 5. Valves in the heart Act to prevent blood from flowing backwards Slam shut every time the heart contracts to build pressure and drive blood forwards
  6. 6. CHORDAE “The heart strings”  Tether the valve to the heart wall like parachute strings  Hold the valve in place
  7. 7. Capillary facts: >10 billion capillaries barely the diameter of a single red blood cell If all the capillaries in your body were placed end to end, they would circle the globe
  8. 8. Fibrous Connective Tissue shows that every cell is not far from a capillary ode/233&size=_original
  9. 9. Blood vessels preserved in the hand
  10. 10. Blood  A type of connective tissue  Made up of a base fluid called plasma  Erythrocytes (RBC)  Leukocytes (WBC)  Platelets  Dissolved chemicals such as glucose, fatty acids, proteins, amino acids, hormones,