The Circulatory System

1234567891011121314151617
Across
  1. 4. a thin serous membrane lining the cavities of the heart
  2. 5. cell fragments & plasma proteins
  3. 6. the outermost protective layer of the heart
  4. 9. Carry blood away from the Heart
  5. 10. a dividing wall or membrane especially between bodily spaces
  6. 11. measured beats when blood pressure is at its lowest
  7. 12. measured when the heartbeats are the highest
  8. 13. a fist-sized organ that pumps blood throughout your body
  9. 16. A fluid-filled cavity in the heart or brain
  10. 17. makes up 55% of the blood volume
Down
  1. 1. The muscle layer of the heart
  2. 2. Red Blood Cells
  3. 3. indicates the number of heartbeats per minute
  4. 7. Bring nutrients & oxygen to the tissues
  5. 8. White Blood Cells
  6. 14. Carry blood to the Heart
  7. 15. the two upper chambers of the heart