The Heart and Blood Vessels

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Across
  1. 6. isovolumetric _______________ is the stage of the cardiac cycle where all valve are closed, but the ventricles are generating pressure (systole)
  2. 8. the muscular layer of the heart
  3. 9. ___________ phase is the stage of the cardiac cycle where the pressure generated by the ventricles is greater than the pressure in the blood vessels, and the semilunar valves open (blood leaves the heart)
  4. 11. ____________ arteries- the vessels into which deoxygenated blood is pumped from the right ventricle, moving it towards the lungs
  5. 12. vena _______, the largest vein in the body, divided into superior and inferior portions, that delivers blood to the right atrium
  6. 15. __________ atrium; the chamber into which pulmonary veins deliver oxygenated blood
  7. 16. largest blood vessel in the body, receives high pressure, oxygenated blood from the left ventricle to deliver to the body's tissues
  8. 20. the SA node is also known as this, because it begins the cardiac cycle
  9. 22. the lower, pumping chambers of the heart
  10. 23. the cardiovascular circuit tasked with circulating blood from the heart to the body tissues and back
  11. 24. describes the blood found on the right side of the heart
  12. 25. isovolumetric _________________ is the stage of the cardiac cycle where all valve are closed, but the ventricles are losing pressure (diastole)
Down
  1. 1. also known as the mitral valve, separates the left atrium and left ventricle
  2. 2. a ring of muscle responsible for relaxing or tightening to allow/prevent the passage of fluids, solids, or gases
  3. 3. the wall that divides the heart into right and left halves
  4. 4. the pulmonary circuit is tasked with circulating blood to and from this organ
  5. 5. AV valve between the right atrium and right ventricle
  6. 7. a state of contraction
  7. 10. the outer covering of the heart, divided into fibrous (outer) and serious (inner) layers
  8. 13. carry blood away from heart, thick walled
  9. 14. a state of relaxation
  10. 17. describes the blood found on the left side of the heart
  11. 18. smallest blood vessels that participate directly in gas exchange
  12. 19. carry blood to the heart; thin walled, contain valves to prevent backflow
  13. 21. the upper, receiving chambers of the heart
  14. 26. the point of the heart