Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Nervous Systemmedium · 45s
What is the primary function of astrocytes?
TopicNervous System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Astrocytes are star-shaped glial cells that form the blood-brain barrier by wrapping end-feet around capillaries and regulate K⁺ levels, neurotransmitter uptake, and nutrient support for neurons, maintaining CNS homeostasis.
Final Answer: Option C - Maintain blood-brain barrier and regulate extracellular ion balance