Heart

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Across
  1. 4. blood vessels that carry oxygen-poor blood to your heart
  2. 7. one of your four heart valves mitralvalve one of your four heart valves
  3. 8. heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart
  4. 10. made up of blood vessels that carry blood away from and towards the heart
  5. 11. parts of your heart that act like doors
Down
  1. 1. muscular chamber that pumps blood out of the heart and into the circulatory system
  2. 2. the smallest and most numerous of the blood vessels
  3. 3. blood vessels that distribute oxygen-rich blood to your entire body
  4. 5. the liquid component of your blood that contributes to 55% of your blood's total volume
  5. 6. the triangular wall of cardiac tissue that separates the left and right ventricles (i.e., the lower chambers) of the heart.
  6. 9. the smallest structural and functional unit of an organism