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spinal cord
| Question | Answer |
|---|---|
| spinal cord | columns of white matter composed of myelinated nerve fibers form outer part of H shaped core of spinal cord |
| bundles of axons | tracts |
| interior of spinal cord | composed of gray matter made up of neuron dendrites and cell bodies |
| spinal tracts provide | 2-way conduction paths ascending and descending |
| functions of spinal cord | primary center for all spinal cord reflexes; sensory tracts conduct impulses to brain and motor tracts conduct impulses from brain |
| coverings of brain and spinal cord | cranial bones and vertebrae and cerebral and spinal meninges |
| cerebral and spinal meninges | dura mater, pia mater, arachoid mater |
| fluid spaces of brain and spinal cord | subarachnoid spaces of meninges, central canal inside cord, ventrides in brain |