Biology Nervous Coordination UHS 2022
PMDC Verified Question 53 of 86
There is no clear difference between dendrites and axons in sensory neurons, except:
A
Thickness
B
Length
C
Terminal portions
D
None of above
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Terminal portions
Concept:

In pseudo-unipolar sensory neurons, both the peripheral and central processes are structurally axon-like (myelinated, capable of action potentials).

Solution:

  • The primary morphological and functional difference lies at their terminal portions. The peripheral process (functional dendrite) ends in sensory receptors, whereas the central process (true axon) ends in synaptic knobs within the central nervous system.


Why other options are incorrect:

  • Thickness / Length: In sensory neurons, the peripheral and central branches can be nearly identical in diameter and extensive length.

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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