The cranial cavity
The brain sits in the intracranial space or cranial cavity (space within the skull). It is cushioned from the bone by three membranes (the meninges) and cerebrospinal fluid (brain and spinal fluid) which also keeps it nourished.
The cavity is formed within the cranium which is made up of 8 bones, all fused together. These bones are: frontal bone, occipital bone, sphenoid bone, ethmoid bone, two parietal bones and two temporal bones.
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