Biology Nervous Coordination PMC 2020
PMDC Verified Question 71 of 86
Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?
A
Epinephrine
B
Dopamine
C
Serotonin
D
Endorphins
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Endorphins
Concept:

The body has endogenous analgesic (pain-relieving) systems to cope with extreme stress or physical exertion.

Solution:

  • Endorphins (endogenous morphines) are neuropeptides produced by the central nervous system and pituitary gland. They bind to opiate receptors to significantly block pain signals and can induce feelings of euphoria.


Why other options are incorrect:

  • Epinephrine / Dopamine / Serotonin: While they affect mood and the "fight or flight" response, they are not primarily known as the body's natural painkillers.

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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