Which Is the Correct Path of an Electrical Excitation from the Pacemaker

question 15

Multiple Choice

Which is the correct path of an electrical excitation from the pacemaker to a cardiomyocyte in the left ventricle (LV) ?

• A) Sinoatrial (SA)node → atrioventricular (AV)bundle → atrioventricular (AV)node → Subendothelial conducting network → cardiomyocyte in LV
• B) Atrioventricular (AV)node → subendothelial conducting network → atrioventricular (AV)bundle → sinoatrial (SA)node → cardiomyocyte in LV
• C) Atrioventricular (AV)node → sinoatrial (SA)node → atrioventricular (AV)bundle → Subendothelial conducting network → cardiomyocyte in LV
• D) Sinoatrial (SA)node → atrioventricular (AV)node → atrioventricular (AV)bundle → Subendothelial conducting network → cardiomyocyte in LV
• E) Sinoatrial (SA)node → atrioventricular (AV)node → Subendothelial conducting network → atrioventricular (AV)bundle → cardiomyocyte in LV

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