Start learning →

The 'fight-or-flight' response is primarily mediated by the:

ASympathetic nervous system + norepinephrine
BParasympathetic nervous system + acetylcholine
CEnteric nervous system + serotonin
DSomatic nervous system + dopamine
Answer & Solution
Correct answer: A. Sympathetic nervous system + norepinephrine
**SYMPATHETIC ANS releases norepinephrine:** ↑ heart rate, dilates pupils, breaks down glycogen, dilates bronchi, inhibits digestion. Prepares body for 'fight or flight'. **PARASYMPATHETIC:** opposite, 'rest + digest'.
Practise this question with Quill — AP Biology →

Keep practising Unit 4B: Neural Control & Signal Coordination

Browse all Unit 4B: Neural Control & Signal Coordination questions for AP Biology, or explore more Biology topics.

Start a Unit 4B: Neural Control & Signal Coordination lesson →
Related questions
Tap the one that does not fitComplete the blood sugar loopSort the neuron by its shapeJudge the hormone claimsTrue or false: the hormonesJudge the nerve fibre claimsWhich gland makes it?Thymosins, which act on the immune system, are secreted by the