Home › NEET UG › Biology › Chemical Coordination and Integration › The 'fight-or-flight' response is primarily medi…
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'.
Related questions
Which hormone produced by the kidney stimulates the formation of red blood cells?Which hormone secreted by the atrial wall of the heart decreases blood pressure?Which corticoids regulate the balance of water and electrolytes in the body?Underproduction of adrenal cortex hormones leads to which named disease?Adrenaline and noradrenaline are known by which name because of when they are released?Parathyroid hormone is described as which kind of hormone?Which thyroid hormone regulates blood calcium by decreasing it?Glucagon acts mainly on which cells of the body?