Questions: Activation of the sympathetic nervous system during stress does NOT cause which of the following? Increased heart rate Increased blood pressure Increased gastrointestinal activity Increased blood flow to skeletal muscle

The answer is: Increased gastrointestinal activity.

Explanation for each option:

1. Increased heart rate: The activation of the sympathetic nervous system during stress leads to the release of adrenaline and noradrenaline, which increase the heart rate to prepare the body for a "fight or flight" response. This option is correct.

2. Increased blood pressure: The sympathetic nervous system causes vasoconstriction, which increases blood pressure to ensure that vital organs and muscles receive more blood and oxygen during stressful situations. This option is correct.

3. Increased gastrointestinal activity: During stress, the sympathetic nervous system actually decreases gastrointestinal activity. This is because the body prioritizes blood flow to muscles and vital organs over digestion, which is not immediately necessary for survival in a "fight or flight" scenario. This option is incorrect.

4. Increased blood flow to skeletal muscle: The sympathetic nervous system increases blood flow to skeletal muscles to prepare the body for rapid physical action. This option is correct.

Summary: The activation of the sympathetic nervous system during stress does NOT cause increased gastrointestinal activity.