Biology Nervous Coordination KMU 2024
PMDC Verified Question 27 of 86
A motor neuron:
A
Carries impulse from effectors to CNS
B
Carries impulse from receptors to CNS
C
Connects sensory nerves to ganglions.
D
Carries impulse from CNS to muscles
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Carries impulse from CNS to muscles
Concept:

Efferent pathways carry "effects" outward.

Solution:

  • By anatomical definition, a motor neuron (efferent neuron) has its cell body in the Central Nervous System (CNS) and projects its long axon outward to transmit electrical impulses from the CNS to muscles or glands (effectors), commanding them to act.


Why other options are incorrect:

  • Receptors to CNS: This is the strict job of the sensory (afferent) neuron.


  • Effectors to CNS: Signals do not travel backwards from effectors.


  • Connects nerves to ganglions: Describes structural anatomy, not the functional directionality of a motor fiber.

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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