Solved UPSC CDS/OTA Question
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Q · Nervous Systemmedium · 45s
The sympathetic nervous system arises from:
TopicNervous System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Sympathetic outflow originates from the thoracolumbar region of the spinal cord (T₁–L₂), with preganglionic fibers synapsing in sympathetic chain ganglia to regulate “fight-or-flight” responses including increased heart rate and vasoconstriction.
Final Answer: Option B - Thoracolumbar spinal segments (T₁–L₂)