A&P Heart Crossword (All words have no space)

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Across
  1. 7. 3 words, this vein transports oxygen-depleted blood from the lower extremities
  2. 9. 3 words, controls blood flow from right atrium to right ventricle
  3. 11. 1 word, covers the outer surface of the heart
  4. 13. 1 word, narrow end of the heart
  5. 14. 1 word (for space), controls blood flow from left atrium to left ventricle
  6. 16. 1 word, covers the inner surface of the heart wall
  7. 17. 2 words, pumps blood through the systemic circulatory system
  8. 18. 2 words, sequence of events between every heartbeat
  9. 19. 2 words, prevents blood from re-entering the ventricles while relaxing
  10. 20. 1 word, broad end of the heart
  11. 21. 2 words, these chambers consist of the right and left atrium
Down
  1. 1. 3 words, this vessel transports blood into the lungs
  2. 2. 1 word, thick middle layer of the heart
  3. 3. Who is the super scientist that made this crossword (no spaces)
  4. 4. 2 words, a valve comprised of 3 cusps/flaps
  5. 5. 2 words, a fluid reducing friction between membranes in the heart
  6. 6. 3 words, this vein transports oxygen-depleted blood from upper extremities
  7. 8. 1 word, elastic artery, pumps blood into the systemic circulatory system
  8. 10. 2 words, pumps blood through the pulmonary circulatory system
  9. 12. 2 words, a thick myocardial wall separating the two ventricles
  10. 15. 2 words, these chambers consist of theright and left ventricle