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Chemical Coordination and Integration question

2014 · Q19
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Chemical Coordination and Integration question

2014 · Q19

NEETBiologyChemical Coordination and IntegrationMCQ+4 / −1
Flight-or-flight reactions cause activation of
  1. A
    the parathyroid glands, leading to increased metabolic rate
  2. B
    the kidney, leading to suppression of renin-angiotensin-aldosterone pathway
  3. C
    the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
  4. D
    the pancreas leading to a reduction in the blood sugar levels.
View written solutionFree

Correct answer: C

Adrenal Medulla is called emergency gland and secretes adrenaline (Epinephrine) and nor-adrenaline (nor-epinephrine) hormones.
Adrenaline (epinephrine) is commonly called as ‘emergency hormone’ or 3F – hormone (For fear, fight & flight). It stimulates sweating, heart beat and breathing rate. It causes the dilation of coronary artery (supplying blood to the heart muscles), bronchioles (for increasing inspiratory volume) and pupil (for better vision).

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