Explain how the heart beats.
Understand the Problem
The question is asking for an explanation of the physiological process of heartbeats, including the mechanisms and factors that contribute to the rhythmic contraction and relaxation of the heart muscles.
Answer
The heart beats due to an electrical system called the cardiac conduction system, which sends signals causing the muscles to contract and pump blood.
The heart beats due to an electrical system called the cardiac conduction system. An electrical signal travels from the top of the heart to the bottom, causing the heart muscles to contract and pump blood.
Answer for screen readers
The heart beats due to an electrical system called the cardiac conduction system. An electrical signal travels from the top of the heart to the bottom, causing the heart muscles to contract and pump blood.
More Information
The heart’s electrical system is essential for maintaining the rhythm and rate of the heartbeat, which is vital for effective blood circulation.
Tips
A common mistake is to think that nerves or conscious thought trigger heartbeats, rather than the intrinsic electrical system.
Sources
- How the Heart Beats - nhlbi.nih.gov
- Heartbeat | The Texas Heart Institute - texasheart.org
- Heartbeats | Cincinnati Children's Hospital - cincinnatichildrens.org
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