Which of the following occurs when the sympathetic nervous system is activated?
A) release of glucose by the liver
B) constriction of pupils
C) contraction of bladder wall
D) activation of digestion

Question

Quizplus · Accepted Answer

Activation of the sympathetic nervous system causes the release of glucose by the liver through the process of glycogenolysis, in order to provide energy for the body's fight or flight response.

Answer: B 
 Activation of the sympathetic nervous system causes the pupils of the eyes to dilate or widen, allowing more light in to improve vision in response to a perceived threat.

Answer: C 
 Activation of the sympathetic nervous system causes the relaxation of the bladder wall, allowing for the exit of urine as part of the body's response to a perceived threat.

Answer: D 
 Activation of the sympathetic nervous system inhibits digestion and diverts blood and energy away from the gastrointestinal tract and towards the muscles and organs needed for the fight or flight response. Therefore, activation of digestion would not occur.

Which of the Following Occurs When the Sympathetic Nervous System