Which factor primarily influences heart rate during times of stress?
Understand the Problem
The question is asking which factor has the most significant impact on heart rate when a person is experiencing stress. It presents multiple-choice options that typically represent concepts related to heart physiology.
Answer
The activation of the sympathetic nervous system.
The primary factor influencing heart rate during stress is the activation of the sympathetic nervous system.
Answer for screen readers
The primary factor influencing heart rate during stress is the activation of the sympathetic nervous system.
More Information
When stressed, the body activates the sympathetic nervous system as part of the 'fight or flight' response, leading to an increased heart rate. This physiological reaction prepares the body to either confront or flee from a perceived threat.
Tips
A common mistake is to attribute the primary influence to external factors like caffeine or environmental stressors, but it's the internal physiological response orchestrated by the sympathetic nervous system that directly affects heart rate.
Sources
- Sympathetic Nervous System (SNS): What It Is & Function - my.clevelandclinic.org
- Analysis of Heart Rate Variability and Implication of Different Factors - pmc.ncbi.nlm.nih.gov
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