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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
Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this action?
  • ✓
    Adrenaline
  • B
    Glucagon
  • C
    Gastrin
  • D
    Thyroxine
✓

Answer

Correct option: A.
Adrenaline
a
(a) : Adrenaline (epinephrine), also called emergency hormone, is a hormone, produced by the medulla of the adrenal glands, that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing to prepare the body for ‘fright, flight, or fight’. At the same time it inhibits digestion and excretion. Similar effects are produced by stimulation of the sympathetic nervous system.

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