Ace the CVS Pharmacy Exam 2025 - Your Prescription for Success!

Question: 1 / 400

What is the average heart rate pace determined by the SA node?

40-60 bpm

50-70 bpm

60-100 bpm

The average heart rate pace determined by the SA node, or sinoatrial node, is correctly identified as 60-100 beats per minute (bpm). The SA node acts as the natural pacemaker of the heart, generating electrical impulses that initiate heartbeats. This range of 60-100 bpm is considered normal for adults at rest, reflecting the SA node's ability to adapt the heart rate to the body's needs, such as during physical activity or times of rest.

The other ranges listed do not accurately capture the normal functioning pace of the SA node. For instance, heart rates below 60 bpm may indicate bradycardia, which can be symptomatic or concerning in some contexts, while rates above 100 bpm may indicate tachycardia. Thus, the correct answer reflects the physiological capabilities of the SA node in maintaining a healthy heart rate within the specified range.

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70-90 bpm

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