Dog Heart Internal Anatomy

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Across
  1. 2. The muscles in the ventricles that attach to the chordae tendineae.
  2. 4. The valve between the left ventricle and the main systemic artery.
  3. 8. The heart's natural pacemaker node located in the right atrium.
  4. 9. The smooth inner lining of the heart chambers.
  5. 11. The valve between the left atrium and left ventricle (also called Mitral).
  6. 13. Specialized conductive fibers in the ventricle walls.
  7. 14. The fibrous cords anchoring the valve leaflets (tendineae).
  8. 15. The oval depression in the interatrial septum (ovalis).
Down
  1. 1. The thick, muscular middle layer of the heart.
  2. 3. The node that delays the electrical impulse before it reaches the ventricles.
  3. 5. The muscular ridges on the internal surface of the ventricles (carneae).
  4. 6. The innermost layer of the pericardium and outermost layer of the heart wall.
  5. 7. The thick muscular wall separating the left and right sides of the heart.
  6. 10. The valve between the right ventricle and the lungs' main artery.
  7. 12. The valve located between the right atrium and right ventricle.