Periosteum: thick and fibrous membrane that covers the surface area of all bones with the exception of their extremities; contains fat cells and elastic fibers and is filled with nerves and blood vessels
Skull: serves as the brain’s primary form of protection
Dura mater: outermost, toughest membrane of the brain that also covers the spinal cord; responsible for containing the cerebrospinal fluid
Arachnoid mater: middle, delicate membrane; surrounds the brain and spinal cord but does not line the brain down to its folds
Pia mater: thin and delicate most inner layers; covers the entire brain; supplies blood to the cortex
Grey matter (cerebral cortex): consists of cell bodies, glial cells, and capillaries; functions to send sensory or motor stimuli to the central nervous system to cause the appropriate response
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