Biology Chemical Coordination ETEA 2019
PMDC Verified Question 45 of 50
A man has to face interview, but during his first five minutes before the interview he experiences sweating, increased heart rate and respiration. Which hormone is responsible for his restlessness?
A
Epinephrine and nor-epinephrine
B
Insulin and glucagon
C
Adrenocorticotropic hormone
D
Aldosterone
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Epinephrine and nor-epinephrine
Concept:

The "fight-or-flight" response prepares the body for sudden stress by rapidly altering cardiovascular and respiratory rates.

Solution:

  • In acutely stressful situations (like a high-stakes interview), the sympathetic nervous system stimulates the adrenal medulla.


  • The adrenal medulla instantly dumps epinephrine (adrenaline) and norepinephrine into the bloodstream, which collectively cause pupil dilation, sweating, tachycardia (increased heart rate), and hyperventilation.


Why other options are incorrect:

Aldosterone regulates sodium/water balance over hours. Insulin/glucagon regulate glucose slowly. ACTH simply tells the adrenal cortex to release cortisol, which is for long-term stress, not acute panic.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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