As a result of the general stress response, blood concentrations of epinephrine ________.

• A. decrease
• B. fluctuate randomly
• C. remain unchanged
• D. increase

Answer: (D)

Verified step by step guidance

1. Understand the general stress response, also known as the 'fight or flight' response, which is activated by the sympathetic nervous system when an individual perceives a threat or stressor.
2. Recognize that during this response, the adrenal medulla releases catecholamines, primarily epinephrine (adrenaline) and norepinephrine, into the bloodstream.
3. Recall that epinephrine functions to prepare the body for rapid action by increasing heart rate, blood pressure, and blood glucose levels.
4. Therefore, as part of the general stress response, the blood concentration of epinephrine increases to facilitate these physiological changes.
5. Conclude that the correct answer is that blood concentrations of epinephrine increase during the general stress response.