Term
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Definition
3 protective membranes that wrap around CNS
Dura mater – outer most covering
Arachnoid mater – middle layer
Pia mater - attached directly to surface of brain and spinal cord |
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Term
| 2 areas of nervous tissue in brain and spinal cord |
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Definition
Gray matter – contains cell bodies, dendrites, and axons of neurons and neuroglia cells
White matter – contains myelinated axons and neuroglia cells |
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Term
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Definition
Epidural space – between dura and bone
Subdural space – between dura and arachnoid
Subarachnoid space – between arachnoid and pia; contains cerebral spinal fluid |
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Term
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Definition
| the inferior most portion of the spinal cord |
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Term
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Definition
| long band of connective tissue that continues from pia mater of conus and attaches to bone in vertebral canal within sacrum. Helps hold spinal cord in place. |
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Term
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Definition
| lateral extensions of pia mater that attach to the dura. Helps hold spinal cord in place. |
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Term
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Definition
| bundle of spinal nerves that extend beyond the end of spinal cord |
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Term
| Anterior(ventral) root of spinal nerve |
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Definition
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Term
| Posterior (dorsal root) of spinal nerve |
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Definition
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Term
| Posterior (dorsal root) ganglion |
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Definition
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Term
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Definition
| contains motor and sensory axons |
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Term
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Definition
| pain, temperature, light touch |
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Term
| Posterior column (Gracile fasciculus, and Cuneate fasciculus |
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Definition
| touch, deep pressure, vibration, conscious proprioception |
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Term
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Definition
| proprioceptive information to cerebellum |
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Term
| Lateral corticospinal tract |
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Definition
| impulses for voluntary skeletal muscle contraction |
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Term
| Connective tissue coverings of spinal nerves |
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Definition
Epineurium- outer most covering
Perineurium- surrounds and delineates fascicles
Endoneurium- inner most layer; surrounds each nerve fiber |
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Term
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Definition
| supplies dorsal surface and dorsal muscles of body |
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Term
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Definition
| supplies ventral surface and muscles of body |
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Term
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Definition
| Phrenic nerves (C3, 4, and 5)- motor and sensory supply to diaphragm |
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Term
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Definition
Formed by the anterior rami of C5-C8 & T1.
Supplies the shoulders and upper limbs.
Roots → trunks → divisions → cords → nerves. |
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Term
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Definition
Formed by the anterior (ventral) rami of L1-L4.
Supplies the anterolateral abdominal wall, external genitals, and part of the lower limbs.
Femoral nerves, obturator nerves. |
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Term
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Definition
Formed by the anterior rami of L4-L5 and S1-S4.
Supplies the buttocks, perineum, and lower limbs.
Gives rise to the largest nerve in the body- the sciatic nerve. |
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