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The fluid filled spaces in the brain are called ventricles. The fluid is called cerebrospinal fluid
ITS BRAIN ONE AND BRAIN TWO>>>...
You should identify this question yourself using your brain.
What we see is processed as vision in the occipital lobes of the brain.
the middle
it's roughly twice the size of the human brain.
A seagull has a surprisingly small brain, given the intelligent survival skills it has. Its brain is roughly the size of a pea.
blood-brain barrier (!)
ventricles
An X-ray photograph of the fluid-filled spaces in the brain
with help from the brain... surprising, but true
roughly 25%