Heart

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