Ectopic Foci Are Often Caused Due To

question 18

Multiple Choice

Ectopic foci are often caused due to:

• A) an increase in the activity of the sinoatrial (SA) node.
• B) an increase in the activity of the atrioventricular (AV) node.
• C) a delay or blockage in the conduction of electrical impulses.
• D) a decrease in the number of cholinergic neurons innervating the heart.

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