Medicine Which of these statements regarding the conduction system of the heart is TRUE A The sinoatrial (SA) node of the heart acts as the pacemaker B The SA node is located on the upper wall of the left atrium. C The AV node conducts action potentials rapidly through it. D Action potentials are carried slowly through the atrioventricular bundle. 💡 Explanation Which of these statements regarding the conduction system of the heart is TRUE ✓ Correct Answer: A. The sinoatrial (SA) node of the heart acts as the pacemaker