Biology Nervous Coordination UHS 2024
PMDC Verified Question 20 of 86
Which of the following neurotransmitters is lying outside the central nervous system?
A
Gamma - aminobutyric acid
B
Acetylcholine
C
Endorphins
D
Dopamine
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Acetylcholine
Concept:

Neurotransmitters are generally compartmentalized to serve specific neural networks.

Solution:

  • Acetylcholine (ACh) is the primary neurotransmitter of the Peripheral Nervous System (lying outside the brain and spinal cord). It bridges the neuromuscular junction to command skeletal muscle and serves as the chief messenger for the parasympathetic nervous system.


Why other options are incorrect:

  • GABA, Dopamine, Endorphins: These are predominantly active within the networks of the Central Nervous System (brain and spinal cord) for mood, pain regulation, and motor control integration.

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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