What are the effects of the sympathetic and parasympathetic nervous systems?
a) The effects of the sympathetic nervous system are generally to increase organ activity, while the effects of the parasympathetic nervous system are generally to decrease it.
b) The effects of the parasympathetic nervous system are generally to increase organ activity, while the effects of the sympathetic nervous system are generally to decrease it.
c) The effects of both the sympathetic and parasympathetic nervous systems are generally the same and do not differ in their effects on organ activity.