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Spinal Nerves
Anatomy & Physiology Test 3
| Question | Answer |
|---|---|
| Cervical Enlargement | Thicker section of spinal cord due to nerves from the upper limb |
| White Matter | Contains myelinated axons |
| Lumbar Enlargement | Thicker section of spinal cord due to nerves from the lower limb |
| Dorsal Root Ganglia | Cell bodies of sensory neurons located outside central nervous system |
| Endoneurium | Connective tissue surrounding axons |
| Epidural Space | Space between the dura mater and spinal cord |
| Ventral root | Motor nerve fibers exit the spinal cord along this root |
| Perineurium | Connective tissue around fascicle |
| Terminus Filum | Anchors spinal column so it can't move up and down in vertebral column |
| Medullary Cone (conus medullaris) | Tapered end of spinal cord |
| Dura mater | Loose fitting outermost meningeal layer |
| Gray mater | Contains very little myelin. Mostly contains somas, dendrites, and nonmyelinated axons |
| Cauda Equine | Bundles of spinal nerves (L2-S5) that extend past end of spinal cord |
| Anterior Gray Horn | Contains large somas of motor neurons |
| Denticulate Ligaments | Prevents side to side movements of spinal cord in vertebral column |
| Subarachnoid Space | Cerebrospinal fluid is found in this space |
| Dorsal Root | Carries sensory nerve fibers to spinal cord in vertebral column |
| Columns | Bundles of axons running up and down the spinal cord |