Population Crossword

1. conduction system – electrical conduction system consisting of specialized cardiac cells that initiate and propagate electrical impulses throughout the heart
6. – an internal or external electronic device that sends electrical impulses to the heart in order to set the heart rhythm or regulate the heart rate
9. bundle and bundle branches – located in interventricular septum; functions to spread electrical impulse down septum
10. – two lower heart chambers that pump blood to the body and the lungs
12. node – located in right atrial wall; functions to initiate electrical impulse and set the pace of the heart; aka. pacemaker
14. – small blood vessels where nutrient and gaseous exchange occurs
16. – blood vessels that transport blood toward the heart
17. system – system of structures to enclose and convey the transport medium in one direction through the system from one exchange surface to another
18. – blood vessels that transport blood away from the heart
19. – ability to move materials within the body
20. fibers – located in ventricular myocardium; functions to spread electrical impulse throughout ventricles

2. node – located in interatrial septum; functions to delay electrical impulse from sinoatrial node to allow the completion of atrial contraction
3. cycle – muscular events of the heart associated with the flow of blood throughout the heart during one heart beat
4. – ability of cardiac cells to generate the action potential at a certain rate without any external stimulus
5. (EKG, ECG) – graphical representation of cardiac electrical activity
7. – two upper heart chambers that receive blood from the body and the lungs
8. – an internal or external electronic device that applies an electric shock to restore the rhythm of a heart in fibrillation
11. – swelling due to excessive interstitial fluid
13. – external electrical shock used to restore normal heart rhythm
15. – weakness in wall of major artery