Biology Nervous Coordination SZABMU 2024 Reconduct
PMDC Verified Question 25 of 86
Which sequence will be followed when impulse travel from receptor to effector?
A
Motor neuron -> Inter neuron -> Sesory neuron
B
Inter neuron -> Sesory neuron -> Motor neuron
C
Sesory neuron -> Motor neuron -> Inter neuron
D
Sesory neuron -> Inter neuron -> Motor neuron
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Sesory neuron -> Inter neuron -> Motor neuron
Concept:

The reflex arc follows a strict anatomical highway from sensory input to physical output.

Solution:

  • 1. Sensory neuron: Carries the detected stimulus from the receptor towards the Central Nervous System (CNS).


  • 2. Inter neuron: Located entirely within the CNS (spinal cord), it bridges the incoming and outgoing signals.


  • 3. Motor neuron: Carries the command away from the CNS to the effector (muscle or gland).


Why other options are incorrect:

  • Any sequence that does not place the Inter neuron exactly in the middle of Sensory and Motor pathways is anatomically impossible.

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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