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STD 11 - 19. Chemical coordination and integration — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 19. Chemical coordination and integration1 Mark
MCQ
Fight­or­flight reactions cause activation of
  • A
    the parathyroid glands, leading to increased metabolic rate
  • B
    the kidney, leading to suppression of renin­ angiotensin­aldosterone pathway
  • ✓
    the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
  • D
    the pancreas leading to a reduction in the blood sugar levels.
✓

Answer

Correct option: C.
the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
c
(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.

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