Heart Fun Facts

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Across
  1. 3. Color of mollusk blood (no hemoglobin!)
  2. 5. World's #1 killer disease
  3. 10. Hair-thin blood vessels
  4. 12. Largest artery in the body; 'highway' from the heart
  5. 13. Invented in 1816 to avoid awkward ear-to-chest exams
  6. 14. Classic heartbeat sound
  7. 15. 60,000 miles of body “roads” for blood
Down
  1. 1. Its heart can beat as slow as 2 bpm underwater
  2. 2. Broken heart, literally
  3. 4. Most heart attacks happen on this stressful weekday
  4. 6. Lower heart chamber—Latin for “little belly”
  5. 7. Fist-sized organ that pumps 2,000 gallons daily
  6. 8. Heart-healthy habit that’s contagious
  7. 9. Clear part of eye with no blood supply
  8. 11. Upper heart room—Latin for “entrance hall”