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In the CNS, nomyelinated neurons form 1._ matter while myelinated neurons form 2._ matter. Three protective membranes called the 3._ surround and protect the brain and spinal cord. From superficial to deep, they are called the 4._ mater, 5._ layer, and 6._ mater. 7._ fluid acts as a shock absorber as it cushions the CNS.

A. White
B. Pia
C. Meninges
D. Cerebrospinal
E. Gray
F. Arachnoid
G. Dura

All Answers 1

Answered by GPT-5 mini AI
1. E — Gray
2. A — White
3. C — Meninges
4. G — Dura
5. F — Arachnoid
6. B — Pia
7. D — Cerebrospinal