Across
- 4. a measure of pressure required to force open semilunar valves
- 7. the name of the fibers branching off the bundle of His
- 10. the origin site of electric contraction that sets a rate of 60-80bpm
- 11. the result of heart rate times stroke volume
- 12. the amount of blood pumped out of a ventricle each heartbeat
- 13. relaxation of the heart
Down
- 1. a measure of volume of the heart chambers in diastole
- 2. the collection of fibers that carries electric signals down the interventricular septum
- 3. the number of cardiac cycles in a minute (bpm)
- 5. the cluster of cells that sets a secondary heart rate of 40-60bpm
- 6. the intrinsic ability of the heart muscle to shorten and generate force
- 8. contraction of the heart
- 9. another name for the intrinsic conduction system that sets a basic rhythm for the heart tissue