The correct sequence of meninges from inner to outer side is:
pia mater, arachnoid membrane and dura mater.
— Concept: This question tests your knowledge of the protective layers, called meninges, that surround the brain and…Concept: This question tests your knowledge of the protective layers, called meninges, that surround the brain and spinal cord.
Why (C) is correct: The meninges are three protective membranes that enclose the brain and spinal cord. From the innermost layer (closest to the brain/spinal cord) to the outermost layer, they are: piamater, arachnoid membrane, and duramater. The piamater is delicate and closely adheres to the neural tissue. The arachnoid membrane is a thin, web-like middle layer. The duramater is the tough, fibrous outermost layer.
Why other options are wrong:
- (A) This sequence is incorrect; duramater is outermost, and piamater is innermost.
- (B) This sequence is incorrect; duramater is outermost, and arachnoid membrane is in the middle.
- (D) This sequence is incorrect; arachnoid membrane is in the middle, and piamater is innermost.
NEET Tip / Mnemonic: To remember the order from Duramater (outer) to Piamater (inner), think of DAP (Duramater, Arachnoid, Piamater) or PAD (Piamater, Arachnoid, Duramater) if you're going from inner to outer.
Correct Answer: (C)
pia mater, arachnoid membrane and dura mater.