Fightorflight reactions cause activation of

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19.Chemical Coordination and Integration

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Fightorflight reactions cause activation of

the parathyroid glands, leading to increased metabolic rate

the kidney, leading to suppression of renin angiotensinaldosterone pathway

the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine

the pancreas leading to a reduction in the blood sugar levels.

(NEET-2014)

Solution

(c) : Hormones epinephrine and norepinephrine are secreted from adrenal medulla. They are emergency hormones released in condition of stress, emergency etc. Epinephrine and norepinephrine are also released by adrenergic nerve fibres of sympathetic nervous system where they act as neurotransmitters.

Standard 11

Biology