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contains cell bodies, dendrites, unmyelinated axons, and neuroglia
main site of synaptic contact between neurons
contains myelinated axons
tracts are bundles of myelinated axons that carry nervse signals within CNS
continuous with spinal cord, components include medulla oblongata, pons, midbrain, reticular formation
consists of dense irregular CT that lines the cranial cavity and surrounds the spinal cord
thin layer of transparent collagen and elastic fibers that adhere to the spinal cord and brain
between the dura mater and wall of the vertebral canal
filled with blood vessels, adipose tissue, loose CT, only on spinal cord
describes inflammation of the arachnoid mater and/or pia mater caused by bacteria and/or viruses that invade the central nervous system via the nose or throat
brain swells, ventricles enlarge, brainstem may hemmorhage
symptoms include high fever, stuff neck, drowsiness, intense headache, coma
death may occur within hours of onset
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