A young man happens to spot an ex-girlfriend he's trying to avoid. Why does his mouth become dry?
A. His sympathetic nervous system overrides the parasympathetic stimulation for saliva production.
B. His cranial nerves shut down saliva production.
C. His central nervous system shuts down saliva production.
D. His cervical plexus overrides the parasympathetic stimulation for saliva production.
I think the correct answer would be A. His mouth becomes dry because his  sympathetic nervous system overrides the parasympathetic stimulation for saliva production. It because of the fight or flight response of the body due to the stress or nervousness of seeing an ex.
