Neuroscientists often categorize parts of the brain into gray matter and white matter. What makes the white matter regions appear white?
A) It contains only dendrites.
B) It is composed of myelinated axons.
C) It produces a natural bleaching chemical.
D) It contains only white cell bodies.
Answer: B
Rationale: White matter is composed of myelinated axons that interconnect the different regions of the brain. The myelin makes the regions appear white.
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Why are the symptoms of vascular neurocognitive disorder so different in each patient? a. It is not known why patients with vascular neurocognitive disorder have different symptoms. b. The symptoms relate to the area of the brain damaged
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