Elizabeth Ryder - The Heart

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Across
  1. 5. the number of times the heart beats per minute.
  2. 7. between 60 and 100 beats per minute.
  3. 12. created by the vibrations of the valve leaflets as they close against the ventricular walls when the ventricles begin to contract.
  4. 14. the series of events that occur during a single heartbeat, from the beginning of ventricular contraction to the start of the next contraction.
  5. 15. second sound heard during a heartbeat, following the "lub" sound which occurs when the atrioventricular valves close.
  6. 16. the bottom number in a blood pressure reading, typically expressed in millimeters of mercury.
  7. 19. the force of blood pushing against the walls of your arteries.
  8. 20. a condition in which the force of blood against the artery walls is consistently too high.
  9. 21. a medical test that records the electrical activity of the heart.
Down
  1. 1. a small group of cells in the heart that connects the electrical systems of the atria and ventricles.
  2. 2. generates an electrical signal that causes the upper heart chambers (atria) to contract.
  3. 3. the measurement of the force exerted on the arteries by the heart when it pumps blood out.
  4. 4. systolic pressure (top number) of less than 120 mmHg and a diastolic pressure (bottom number) of less than 80 mmHg.
  5. 6. a network of blood vessels within the heart that carry deoxygenated blood back to the right atrium.
  6. 8. specialized nerve cells located in the inner walls of the heart's ventricles.
  7. 9. a bundle of specialized heart muscle fibers that carries electrical impulses from the AV node to the ventricles.
  8. 10. two pathways in the heart that carry electrical impulses to the ventricles.
  9. 11. places on the body where you can feel your pulse, or heartbeat.
  10. 13. a network of specialized cells within the heart that generates and transmits electrical impulses, coordinating the rhythmic contractions of the heart chambers.
  11. 17. two major blood vessels that supply the heart muscle with oxygen-rich blood.
  12. 18. fibrous cords that connect the papillary muscles to the atrioventricular (AV) valves of the heart.