Term
| Excitatory or inhibitory: Substance P |
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Definition
| Substance P is excitatory. YippppPeee |
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Term
| Excitatory or inhibitory: Acetylcholine |
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Definition
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Term
| Excitatory or inhibitory: Enkaphalin |
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Definition
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Term
| Excitatory or inhibitory: Glycine |
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Definition
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Term
| What is the cuneocerebellar tract? |
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Definition
| Major ascending tract. Mediates unconscious proprioception from muscle spindles and golgi tendon organs of upper limbs from teh accessory cuneate nucleus through the inferior cerebellar peduncle to anterior lobe of cerebral cortex |
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Term
| What is the posterior cerebellar tract? |
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Definition
| Ascending tract. Mediates unconscious proprioception from muscle spindles and golgi tendon organs of lower limbs through inferior cerebellar peduncle (cuneocerebellar tract travels through inferior peduncle too) ipsalaterally to anterior lobe of cerebellar cortex. |
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Term
| Explain the route of the lateral spinothalamic tract? |
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Definition
| Mediates pain and temperature inputs. Decussates immediately. Sends inputs to contralateral VPL of thalamus and them to postcentral gyrus. |
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Term
| What is the rubrospinal tract? |
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Definition
| Descending tract. Mediates descending excitation of flexor motor neurons art cervical and lumbar levels of contralateral spinal cord. |
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Term
| What is the reticulospinal tract? |
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Definition
| Descending tract. Arises from medulla, descends bilaterally to the cervical and lumbar levels of spinal cord, mediating inhibition of spinal reflexes, mainly of extensors. |
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Term
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Definition
| Damage to dorsal root ganglion and dorsal columns from syphillis -- ipsalateral loss of conscious proprioception and tendon reflexes. |
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Term
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Definition
| A disease of unknown etiology that destroys corticospinal fibers and ventral horn cells (polio destroys these cells). ALS causes abnormal reflexes, muscle weakness, atrophy, death |
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Term
| How does syringomyelia pressent |
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Definition
| Capelike distribution of bilateral loss of pain and temp. This is due to expanded central canal pressing on decussating spinothalamic fibers. |
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