What is the primary cause of pulse rate elevation during exercise?
Understand the Problem
The question is asking about the physiological mechanisms that lead to an increase in pulse rate during physical activity. It requires an understanding of how exercise affects heart rate and the factors involved in this response.
Answer
The sympathetic system increases heart rate during exercise to meet oxygen demands.
The primary cause of pulse rate elevation during exercise is the removal of parasympathetic stimulation and the activation of the sympathetic nervous system, which increases heart rate to meet the body's increased oxygen demands.
Answer for screen readers
The primary cause of pulse rate elevation during exercise is the removal of parasympathetic stimulation and the activation of the sympathetic nervous system, which increases heart rate to meet the body's increased oxygen demands.
More Information
During exercise, the body needs more oxygen for energy, and the heart rate increases as a response to pump more blood throughout the body. This is primarily regulated by the autonomic nervous system, where sympathetic activation increases heart rate.
Tips
Assuming that only one system is responsible for heart rate changes is a common mistake; both sympathetic activation and parasympathetic withdrawal play roles.
Sources
- Why Does the Heart Rate Increase During Exercise? - Heartscope - heartscope.com.au
- All About Heart Rate | American Heart Association - heart.org
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