Final answer:
The sympathetic nervous system prepares the body for fight-or-flight response. It increases heart rate and dilates trachea and bronchi, but does not constrict them.
Step-by-step explanation:
The sympathetic nervous system is responsible for the fight-or-flight response, which prepares the body to respond to perceived threats or stressors. The effects of the sympathetic nervous system on its target cells include increased heart rate, dilated trachea and bronchi, and decreased blood flow to the digestive system. However, one effect that is NOT part of the sympathetic fight-or-flight response is the constriction of the trachea and bronchi.