Chapter 19 The Circulatory system: Heart

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Across
  1. 3. The study of the heart and its disorders.
  2. 4. When stimulation is increased this branch of the nervous system lowers the heart rate.
  3. 6. AKA the pacemaker node
  4. 7. Short, thick, branched muscles of the heart.
  5. 9. The left and right coronary arteries from this blood vessel.
  6. 10. The blunt inferior point tip of the heart.
  7. 13. This valve regulates the openings between the atria and the ventricles.
  8. 15. The thickest layer of the heart.
  9. 16. the broad flat superior top portion of the heart.
Down
  1. 1. the circuit that carries blood from the right ventricle to the lungs for gas exchange and returns it to the left atrium.
  2. 2. This cavity is the space between the visceral and parietal layers of the pericardium.
  3. 4. The double-walled sac enclosing the heart.
  4. 5. AKA the left atrioventricular valve.
  5. 8. Layer of the heart that covers the valve surfaces.
  6. 11. The outermost layer of the heart.
  7. 12. the side of the heart that supplies blood to the systemic circuit.
  8. 14. The rhythm when a normal heart rate is established by the SA node.