What would happen if the heart were not able to relax between contractions? The heart would no longer pump blood – because without relaxation, the heart cannot fill with blood. No change in heart function – contractions are the important part. The heart would pump more blood out with each heartbeat.
What would happen if the heart were not able to relax between contractions? The heart would no longer pump blood – because without relaxation, the heart cannot fill with blood. No change in heart function – contractions are the important part. The heart would pump more blood out with each heartbeat.
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter35: The Nervous System
Section: Chapter Questions
Problem 2VCQ: Figure 35.11 Potassium channel blockers, such as amiodarone and procainamide, which are used to...
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Cardiac muscle cells have a longer refractory period than skeletal muscle cells. This ensures that the heart is able to relax between contractions. What would happen if the heart were not able to relax between contractions?
The heart would no longer pump blood – because without relaxation, the heart cannot fill with blood.
No change in heart function – contractions are the important part.
The heart would pump more blood out with each heartbeat.
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