Heart of Science

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Across
  1. 3. pointy region of the heart (4)
  2. 4. the heart is composed of this type of muscle (7)
  3. 6. carry blood away from the heart (8)
  4. 10. this structure connects the cusps of the AV valves to the ventricles (7 8)
  5. 12. these ensure there is no backflow of blood (6)
  6. 13. these superior and inferior vessels enter the right atrium (5,5)
  7. 15. these arteries carry deoxygenated blood to the lungs (9)
  8. 19. how many chambers does the heart have? (4)
  9. 20. the pulmonic and aortic valves are also known as _________ valves (9)
  10. 21. what do the ventricles do while the atria contract? (5)
Down
  1. 1. return blood to the heart (5)
  2. 2. region of heart where great vessels enter and leave (4)
  3. 3. pulmonary veins enter the left ________ (6)
  4. 5. smallest branching blood vessel forming a network (9)
  5. 7. the ___________ arteries supply blood to the heart muscle itself (8)
  6. 8. the heart is located within the _________ (11)
  7. 9. bloods from the right atrium flows into the right ________ (9)
  8. 11. type of blood the pulmonary veins are carrying (10)
  9. 14. where the coronary veins drain into (5)
  10. 16. vessel where oxygenated blood leaves the heart (5)
  11. 17. the ________ (5) atrium receives deoxygenated blood from the vena cava
  12. 18. what is the name of the valve that prevent backflow of blood into the right atrium when the right ventricle contracts? (9)
  13. 22. the ________ (4) ventricle is the hardest working cardiac chamber and therefore has the thickest myocardium