In Your Physiology Class While You Learn to Take a Pulse

question 36

Multiple Choice

In your physiology class while you learn to take a pulse of your healthy looking classmate you notice it is very slow, about 50 bpm. Is that the reason for concern?

• A) Yes, we have to get him to the emergency room as soon as possible. He needs a pacemaker!
• B) No, we had an exam earlier today and since he slept very little the sympathetic system activation lowered his heart rate.
• C) No, most likely he has been doing endurance training that slowed his heart rate to match his increased stroke volume.
• D) Not unless he is on a low carbohydrate diet that causes less action potentials to occur in the cardiac muscles.

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