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| 3 layers of specialized membranes surrounding the brain and spinal cord |
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| outermost covering of the central nervous system (CNS) |
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| contains loose conective tissue, blood vessels and adipose tissue |
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| seperates the inner surface of the dura mater from the second meningeal layer |
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| the second meningeal layer |
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Definition
contains a delicate web of collagen and elastic fibers
(seperates arachnoid and pia mater) |
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| Cerebrospinal fluid (CSF) |
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Definition
| acts as a shock absorber and transports dissolved gases, nutrients, chemical messages, and waste prducts |
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| connects to 31 pairs of spinal nerves |
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| supplies nerves to the shoulder girdles and upper limbs |
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| Provides innervation to the pelvis and lower limbs |
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| a narrow internal passageway filled with cerebrospinal fluid |
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| shallow groove in the posterior surface of the spinal cord |
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| deep groove in the anterior surface of the spinal cord |
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| contain the axons of neurons also bringing sensory info to the spinal cord |
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| contain axons of CNS motor neurons that control muscles and glands |
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| involved in the motor control of skeletal muscles |
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Definition
| anterior and posterior to the cantral canal. Also interconnect the horns on either side of the spinal cord |
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Definition
| carry sensory info toward brain |
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| convey motor commands into the spinal cord |
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