Final answer:
The sympathetic nervous system, which is part of the autonomic nervous system, is responsible for the physiological changes during a 'pop' test. It increases heart rate, dilates air passages, and activates sweat glands.
Step-by-step explanation:
The nervous system responsible for the physiological changes during a "pop" test is the sympathetic nervous system, which is part of the autonomic nervous system. This system is responsible for the 'fight or flight' response, preparing the body for potential emergencies. It increases heart rate, dilates air passages, and activates sweat glands.