Biology Nervous Coordination UHS 2024
PMDC Verified Question 12 of 86
In human myelinated fibers nerve impulse travels at ____ meters per second.
A
130-150
B
190-210
C
100-120
D
160-180
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: 100-120
Concept:

Myelination vastly accelerates the speed of electrical conduction via saltatory propagation.

Solution:

  • In human neurobiology, the thickest, heavily myelinated somatic motor and sensory fibers (Type A-alpha fibers) have a maximum conduction velocity generally ranging from 100 to 120 meters per second (approx. 220-270 mph).


Why other options are incorrect:

  • Options above 120 m/s exceed the known physiological limits of human neuronal conduction.

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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