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14 Cards in this Set
- Front
- Back
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Where is the cell body for the trigeminocerebellar system? what modality does it do?
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This is in the mesencephalic nucleus.
this is used for non-conscious proprioception. this is a 1 neuron pathway |
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where does the trigeminocerebellar system run to? (coming from the mesencephalic nucleus)
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(mesencephalic nucleus fibers exit, then return to mesencephalic tract)
trigeminal motor nucleus- jaw jerk reflex cerebellum- via superior cerebellar peduncle |
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What modality do the spinocerebellar pathways convey?
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these convey non-conscious proprioception
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What area does the Posterior spinocerebellar cover?
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this is PRG from below L1
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Where does the posterior spinocerebellar tract run up from the PRG?
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this ascends in the fasciculus gracilis, and then synapses in the ipsilateral dorsal nucleus of clarke.
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Where is the 2nd neuron for the posterior spinocerebellar tract found? where does it axon go
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this is clark's nucleus. found in the medial portion of the intermediate zone of the spinal cord, from T1-L2.
Its axons stay ipsilateral, and enter the cerebellum via restiform body (mossy fibers) |
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Where does the cuneocerebellar tract get info from?
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the upper limb, C2-T4.
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Where do the processes from the primary neuron of the cuneocerebellar tract run?
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these ascend in fasciculus cuneatus, and synapse in the cuneate nucleus (on the same side)
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Where is the 2nd neuron for the cuneocerebellar tract located?
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this is in the lateral cuneate nucleus (in the caudal medulla).
sends fibers into the cerebellum via restiform body |
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What info does the anterior spinocerebellar tract carry?
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this carries PRG from below L1.
the central processes synapse on spinal border cells along the anteriolateral surface of the anterior horn. |
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Where are the 2nd neurons located for the anterior spinocerebellar tract
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the spinal border cells.
there is a double cross. -cross to form contralateral ASCT, then ascend to Pon/midbrain- then re-cross to enter cerebellum @ that level |
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What information is carried by the Rostral spinocerebellar tract?
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this carried the PRG of the C4-C8 levels. info from upper limb.
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where do the primary neurons from the rostral spinocerebellar tract synapse?
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these synapse in the spinal cord intermediate zone
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Where do all spinocerebellar pathways end up?
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these all end up on the ipsilaterall side as the sensation that came in.
IPSILATERAL non-conscious proprioception. |
