CNS a & p
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| Protective covering(s) of brain and spinal cord | outer-cranial bones and vertebrae, inner are the meninges
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| 3 layers meninges | dura mater, arachnoid mater, pia mater
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| strong white fibrous tissue, serves as the outer layer of the meninges | dura mater
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| cobweb-like layer,innermost layer of the meninges | arachnoid
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| transparent mater, adheres to the outer surface of the brain and spinal cord and contains blood vessels. | pia mater
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| 3 extensions of dura mater | Falx cerebri, Falx cerebelli, Tentorium cerebelli
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| projects downward into longitudinal fissure to form a partition between the two cerebral hemispheres | Falx cerebri
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| separates the hemispheres, of the cerebellum | Falx cerebelli
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| separates the cerebellum from the cerebrum | Tentorium cerebelli
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| spaces between and around the meninges | epidural spaces, subdural space, subarachnoid space
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| outside the dura mater but inside the bony coverings of the spinal cord | epidural space
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| space is between the dura mater and arachnoid mater, contains lubricating serous fluid | subdural space
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| space under the arachnoid and outside the pia mater. contains cerebrospinal fluid | subarachnoid space
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| what are the 2 bundles of nerve fibers/roots that project from each side of the spinal cord | dorsal nerve root
ventral nerve root
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| dorsal and ventral nerve roots join together to form a single nerve called | spinal nerve
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| “horse tail” of spinal nerve roots called the | cauda equina
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| lowest part of the brainstem | medulla oblongata
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| uppermost part of the brainstem | midbrain
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| lies above the medulla and below the midbrain | pons
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| part of the brain that attaches to the spinal cord | medulla oblongata
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| second largest part of the brain | cerebellum
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| internal white matter of the cerebellum (literally “tree of life | arbor vitae
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| both the cerebellum and the cerebrum have numerous grooves, name 2 | sulci
gyri
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| “between brain” located between the cerebrum and the midbrain | diecephalon
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| dumbbell-shaped mass of gray matter made up of many nuclei | thalamus
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| the largest and uppermost division of the brain, consists of two halves | cerebrum
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