Across
- 2. contraction of the heart
- 6. the heart prefers this substrate over glucose
- 9. these receive and store blood while the ventricles are contracting
- 13. these allow for unidirectional blood flow in the venous system
- 14. these types of valves prevent backflow of blood into ventricles
- 15. volume of blood in the ventricles at the end of filling (abbr.)
- 16. these types of valves prevent backflow of blood into atria
- 17. part of the ECG that represents ventricular depolarization
- 18. relaxation of the heart
- 20. where APs originate in the heart
Down
- 1. time interval where normal cardiac impulses cannot restimulate an already excited area of the heart
- 3. pressure in the artery leading from the ventricles
- 4. part of the ECG that represents atrial depolarization
- 5. cardiac output = __ x __
- 7. this phase in the cardiac action potential causes contraction to last 3-15 times longer than a skeletal muscle twitch
- 8. where APs pause for 0.01 seconds to allow for atrial ejection
- 10. cardiac muscle is connected by these discs
- 11. degree of tension on the heart when ventricles begin contracting
- 12. volume of blood during isovolumetric relaxation
- 19. this ventricle is thicker than the other