Heart Key Terms

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Across
  1. 3. - maintains tension on the chordate tendineae as the ventricle contracts
  2. 5. - period of contraction when the chambers are pumping blood out of the heart
  3. 6. - largest vein in the human body,returns deoxygenated blood
  4. 8. -a large arterial trunk that arises from the base of the left ventr
  5. 11. - semilunar valve between the left ventricle and the aorta
  6. 13. - returns deoxygenated blood to the right atrium of the heart from the upper half of the body
  7. 14. - widening of blood vessels which increases blood flow
  8. 15. - this narrows blood vessels which decrease blood flow
  9. 17. - the volume of blood pumped into the heart per beat
  10. 18. - the valve that closes the orifice between the right atrium and ventricle
  11. 20. - a wall that separates the right and left atria in the heart
Down
  1. 1. - the outermost of the heart and innermost layer ofInferior vena cava sac
  2. 2. - the middle layer of the heart
  3. 4. - thick wall dividing the two ventricles in the heart
  4. 7. - the innermost layer of the heart
  5. 9. -amount of blood pumped from the heart per minute
  6. 10. - period of relaxation in the heart when chambers are filling with blood
  7. 12. -tricuspid and mitral situated between the atria and the ventricles (abbreviation)
  8. 16. - prevent backflow of blood into the ventricles
  9. 19. - valve that closes the orifice between the left atrium and left ventricle of the heart