Term
| 3 Functions of the Nervous System |
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Definition
- receives info in the form of stimuli
- processes and stores info
- generates and coordinates a response to stimuli
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Term
How many cranial nerves and where do they attach?
Spinal nerves? |
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Definition
- 12 pairs of cranial nerves - attach to brain, except CN XI
- 31 pairs of spinal nerves - attach to spinal cord
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Term
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Definition
| a concentration of neuron cell bodies in the CNS |
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Term
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Definition
| made up largely of myelinated axons |
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Term
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Definition
| a functionally organized aggregation of neuron cell bodies in the CNS |
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Term
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Definition
| a bundle of functionally related axons in the CNS |
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Term
| Funiculus/ peduncle/ column |
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Definition
| a group of several tracts in the CNS |
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Term
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Definition
| a functionally organized aggregation of neuron cell bodies in the PNS |
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Term
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Definition
| a bundle of axons in the PNS |
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Term
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Definition
| a single neuron and all the muscle cells it innervates |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| location of higher centers, perception, CN I |
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Term
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Definition
| location of motor and sensory relay nuclei, CN II |
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Term
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Definition
| location of pathways, CN III and IV and their nuclei |
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Term
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Definition
| location of pathways especially to cerebellum, CN V - VIII and nuclei |
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Term
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Definition
| "little brain" - involved in coordination of muscle movement and balance |
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Term
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Definition
| location of pathways, CN IX, X, and XII |
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Term
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Definition
- Olfactory
- optic
- oculomotor
- trochlear
- trigeminal
- abducens
- facial
- vestibulocochlear
- glossopharyngeal
- vagus
- spinal accessory nerve
- hypoglossal
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Term
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Definition
| Olfactory - special sense of smell, actually a CNS tract |
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Term
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Definition
| optic - special sense of vision, actually a CNS tract |
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Term
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Definition
| oculomotor - motor to some intrinsic (smooth) and most extrinsic (skeletal) eye muscles |
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Term
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Definition
| trochlear - motor to one extraocular eye muscle (superior oblique) |
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Term
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Definition
| trigeminal - 3 main divisions; great sensory innervation to the face and motor supply to the muscles of the mastication |
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Term
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Definition
| abducens - motor to one extraocular eye muscle (lateral rectus) |
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Term
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Definition
| facial - motor to the muscles of facial expression, taste from the tongue |
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Term
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Definition
| vestibulocochlear - special sense of balance and hearing |
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Term
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Definition
| glossopharyngeal - motor and sensory to pharynx, sensory to tongue |
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Term
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Definition
| vagus - the "wanderer", motor and sensory to the viscera of the pharynx, larynx, thoracic cavity and much of the abdominal cavity |
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Term
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Definition
| spinal accessory nerve - arises from the upper spinal cord to supply the sternocleidomastiods and trapezius muscles |
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Term
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Definition
| hypoglossal - motor to the intrinsic and extrinsic muscles of the tongue |
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Term
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Definition
| successive vertebral foramina |
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Term
| 3 "specially shaped" areas of the spinal cord |
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Definition
- cervical enlargement - C5-T1, correspond to the sites where neural tissue (nerve cell bodies and axons) serving the upper extremities are located.
- Lumbosacral enlargement - L4-S3, where the extra neural tissue is needed to serve the lower extremities.
- Conus medullaris - the tapered caudal end of the cord, ending around L1-L2.
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Term
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Definition
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Term
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Definition
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Term
| Describe spinal cord length vs. vertebral column length |
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Definition
| Late in embryonic development, the spinal cord and vertebral column are equal in length. after birth the vertebral column continues to grow, whereas the the spinal cord does not. Spinal cord end changes from L3 (birth) to L1-L2 (adult). |
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Term
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Definition
| collection of nerve roots that are inferior to the spinal cord |
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Term
| Spinal nerves exit the vertebral canal superiorly or inferiorly to the corresponding vertebra pedicles? |
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Definition
| inferiorly, except SNs C1-C7 |
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Term
Where is the intermediolateral horn seen?
What is its function? |
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Definition
T1-L2 and S2-S4
part of autonomic nervous system |
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Term
| Describe the ends of the dura mater |
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Definition
Cranially, it is continuous with the dura that lies within the cranial vault.
Caudally, it extends as a sac that ends at S2, attaching to PLL and the periosteum of S2.
Laterally, continuous with the epineurium (outer covering) of each spinal nerve within the vertebral foramen - dura sleeve for protection during movement |
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Term
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Definition
| extend centrally from the arachnoid membrane centrally across the subarachnoid space to attach to the pia mater |
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