Final answer:
Sympathetic stimulation leads to vasoconstriction and shrinkage of nasal tissue through the release of norepinephrine.
Step-by-step explanation:
The stimulation that results in vasoconstriction and shrinkage of the nasal tissue is sympathetic activity. The sympathetic nervous system is responsible for stimulating reactions that prepare the body for 'fight or flight' responses, which include the release of norepinephrine (NE), leading to the constriction of blood vessels and decreased blood flow to certain peripheral tissues. In contrast, the parasympathetic nervous system is generally associated with 'rest and digest' activities, such as bronchoconstriction. When discussing nasal tissue specifically, it is the sympathetic nervous system that activates vasoconstriction to decrease blood flow and reduce tissue swelling.