Across
- 2. volume of blood ejected by the ventricle during each contraction
- 4. Phase of heart when the chambers are relaxed
- 5. Abnormally Fast Heartbeat
- 7. inflammation of the membrane the surrounds and protects the heart
- 9. a composite record of action potentials produced by all the heart muscle fibers during each heartbeat
- 10. Junction between heart muscle fibers in which action potentials conduct
- 12. time period in which a second contraction of the cardiac muscle cannot be triggered;lasts longer than the contraction itself
- 13. Node that normally starts the cardiac excitation;do not have a stable resting potential
- 14. term used to describe a group of specialized cardiac muscle fibers that are self excitable
- 15. volume remaining in each ventricle at the end of systole
Down
- 1. Pathway that sends oxygen poor blood through the lungs and back to the left atrium
- 3. stage of acion potential where maintained depolarization is due to slow voltage gated Ca2+ channels
- 6. stage of action potential of the heart in which contractile fibers are brought to threshold by open voltage gated fast NA+channels
- 8. A narrowing of a heart vlave opening that restricts blood flow
- 11. Failure of the myocardium to contract
- 14. Neurotransmitter released at the parasympathetic system at the heart