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

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

Answer: (C)

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 during stressful situations.
2. Recognize that epinephrine (also called adrenaline) is a hormone released by the adrenal medulla as part of this response.
3. Recall that the release of epinephrine prepares the body to respond to stress by increasing heart rate, blood flow to muscles, and energy availability.
4. Therefore, during 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 as a result of the general stress response.