Anatomy of the Heart!

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Across
  1. 2. Lower right chamber that pumps deoxygenated blood through the pulmonary valve to the lungs.
  2. 8. the membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane.
  3. 9. Another name for the Atrioventricular bundle
  4. 10. Upper left chamber that receives oxygenated blood from the lungs and pumps it into the left ventricle.
  5. 13. Valve between the right atrium and right ventricle that prevents backflow.
  6. 15. Valve located between the right ventricle and the pulmonary artery.
  7. 17. Valve located between the left ventricle and the aorta.
  8. 19. is a small, battery-operated, implantable medical device that monitors and regulates the heart's rhythm
  9. 20. Thick-walled lower left chamber that pumps oxygenated blood through the aortic valve to the rest of the body.
  10. 21. Specialized fibers that receive impulses from the bundle branches and cause the ventricles to contract
  11. 23. the main artery of the body, supplying oxygenated blood to the circulatory system. In humans it passes over the heart from the left ventricle and runs down in front of the backbone.
Down
  1. 1. a sudden, sometimes temporary, cessation of function of the heart.
  2. 3. the muscular tissue of the heart.
  3. 4. a wide venous channel about 2.25 centimeters in length that receives blood from the coronary veins and empties into the right atrium of the heart.
  4. 5. A node that receives impulses from the SA node and slows them before passing them to the ventricles.
  5. 6. Valve between the left atrium and left ventricle with two flaps, ensuring one-way blood flow.
  6. 7. the thin, smooth membrane which lines the inside of the chambers of the heart and forms the surface of the valves.
  7. 11. The heart's natural pacemaker located in the right atrium that initiates electrical impulses.
  8. 12. the major blood vessel that carries deoxygenated (oxygen-poor) blood from the right ventricle of the heart to the lungs for oxygenation
  9. 14. a partition separating two chambers, such as that between the nostrils or the chambers of the heart.
  10. 16. Upper right chamber that receives deoxygenated blood from the body and pumps it into the right ventricle.
  11. 18. Fibers that transmit electrical impulses from the AV node to the bundle branches.
  12. 22. a large vein carrying deoxygenated blood into the heart.