Increased activity in the sympathetic nervous system leads to the relaxation of the airways in the lungs.
The sympathetic nervous system is a nerve network that assists your body in activating its "fight-or-flight" response. When you are stressed, in danger, or physically active, this system becomes more active.
However, if the sympathetic nervous system is damaged, blood vessels do not constrict and blood pressure gradually decreases.
Beta-blockers, alpha-blockers, and centrally acting drugs are the main drugs that have been clearly shown to affect SNS function. The effects of ACE inhibitors (ACE-Is), AT1 receptor blockers (ARBs), calcium channel blockers (CCBs), and diuretics on SNS function, on the other hand, remain debatable.
Therefore, the correct answer is option C. relaxation of the airways in the lungs.
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