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Questions and Answers
Which structure is responsible for continually and rhythmically sending impulses in the heart?
Which structure is responsible for continually and rhythmically sending impulses in the heart?
- The sinoatrial node (SA node) (correct)
- The Purkinje fibers
- The atrioventricular node (AV node)
- The atrioventricular bundle (AV bundle)
Which group of specialized muscle fibers is the only conduction pathway between the atria and ventricles?
Which group of specialized muscle fibers is the only conduction pathway between the atria and ventricles?
- The atrioventricular bundle (AV bundle)
- The atrioventricular node (AV node) (correct)
- The sinoatrial node (SA node)
- The Purkinje fibers
What is the function of the AV bundle in the heart's impulse conduction system?
What is the function of the AV bundle in the heart's impulse conduction system?
- To continually and rhythmically send impulses
- To pick up impulses from the atria
- To serve as the only conduction pathway between the atria and ventricles
- To conduct the impulse down the length of the interventricular septum (correct)
Where is the SA node located?
Where is the SA node located?
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Which group of specialized muscle fibers picks up the impulse from the depolarizing atria?
Which group of specialized muscle fibers picks up the impulse from the depolarizing atria?
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