3A- Heart

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Across
  1. 5. It is the partition between the right atrium and the left atrium
  2. 6. Cardiac muscle term
  3. 10. internal folds of ventricular muscle that give attachment to the chordae tendineae
  4. 12. connective tissue cords that attach to the lower surface of the cusps
  5. 14. The inner epithelial lining of the chambers of the heart is termed
  6. 15. remnant of a foramen that, in the fetal stage of development, existed between the right and left atrium
Down
  1. 1. When closed, it prevents backflow of blood from the right ventricle to the right atrium
  2. 2. A muscle that functions in pumping blood through vessels of the cardiovascular system
  3. 3. Rounded projection of the heart that points inferiorly and to the left
  4. 4. ear-like appendages attached to the lateral surface of the atria
  5. 7. The main vein returning blood from the upper half of the body
  6. 8. A mechanical device that will allow for flow of blood in 1 direction only, thus preventing retrograde flow
  7. 9. sac that encloses the heart
  8. 11. venous chamber located on the posterior surface of the heart
  9. 13. the free edge of each cusp has a small central thickening of fibrous tissue