circulatory system

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Across
  1. 1. Lower sections of the heart
  2. 4. smallest blood vessels that carry blood to the cells also connected to veins and arteries
  3. 5. body fluid (connective tissue) that carries oxygen and nutrients to the cells and takes away metabolic waste (Co2, water, etc.)
  4. 7. blood vessels that bring blood back to the heart: deoxygenated blood
  5. 9. blood cells that protect body against pathogens
  6. 13. relating to the lungs
  7. 14. Section of the heart( your heart has four)
  8. 15. Organ which pumps blood to the body and to the lungs. Made of cardiac muscle cells
  9. 16. the separation between the right and left side of the heart
  10. 17. Structure between the atrium and the ventricle to prevent backward flow of blood
  11. 18. Upper sections of the heart
Down
  1. 2. blood cells that carry oxygen by the help of hemoglobin
  2. 3. system Organ system that moves blood to every part of your body. Consists of the heart, blood, and blood vessels.
  3. 6. medical device used to listen to internal sounds of the body
  4. 8. number of times the heart pump blood or beat in a minute.controlled by electrical shocks generated by the heart and natural Pacemaker
  5. 10. blood vessels that carry blood away from the heart: oxygenated blood
  6. 11. tiny blood cells that stop bleeding by forming blood clots
  7. 12. the liquid part of the blood which holds the blood cells