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Questions and Answers
What is the primary function of the Sinoatrial (SA) Node in the heart?
Which component of the heart is responsible for delaying the electrical signal?
Where are Purkinje Fibers located?
What role does the Bundle of His play in the heart's electrical system?
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What is the function of the Atrioventricular (AV) Node in the heartbeat process?
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Study Notes
Heart Electrical Components
- The heart is a muscular pump responsible for circulating blood throughout the body.
- The heart's pumping action is regulated by electrical signals that trigger muscle contractions and relaxation.
Sinoatrial (SA) Node
- The SA node is situated in the right atrium and is often referred to as the "natural pacemaker" of the heart.
- It initiates the electrical impulses that control heart contractions.
Atrioventricular (AV) Node
- Located in the right atrial wall, near the septum separating the atria and ventricles.
- It delays the electrical signal, allowing the ventricles to fill with blood before they contract.
Bundle of His
- This bundle transmits impulses through the septum to the ventricles.
Purkinje Fibers
- They are found in the ventricular walls.
- These fibers distribute the electrical signals throughout the ventricles, causing them to contract.
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Description
Explore the essential electrical components of the heart, including the Sinoatrial node, Atrioventricular node, Bundle of His, and Purkinje fibers. Understand how these elements work together to regulate heart contractions and maintain blood circulation. This quiz will test your knowledge on the heart's electrical system.
