Sensory and motor tracts
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| descending tracts | motor (efferent) tracts
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| where efferent fibers originate from? | from motor nuclei (cranial nerves) or anterior horn cells spinal nerves?
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| ascending tracts | sensory (afferent) tracts
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| where afferent fibers ariginate from? | in cells outside of brainstem or spinal cord with sensory ganglia ( cranial nerves) or dorsal root ganglia (spinal nerves)
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| corticospinal tracts M | voluntary muscle control
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| Vestibulospinal tracts M | control mm tone, antigravity mm, and postural reflexes
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| Rubrospinal tracts: M | muscular coordination and posture control
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| Reticulospinal system m: | modifies transmition of sensation (pain), spinal reflexes, muscle tone and activity of sweat glands
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| tectospinal tract: | assists in head turning responses in respons to visual stimuli
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| Dorsal columns/medial lemniscus | discriminative touch, stereognosis, tactile pressure, barognosis, graphestesia, recognition of texture, 2 point discrimination, proprioception, and vibration
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| Dorsal columns are divided: | UE - fasciculus cuneatus and LE - fascilicus gracilis
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| Anterior spinothalamic tract (ventral) | crudely localized touch and pressure
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| lateral spinothalamic tract: | pain and temperature
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| Spinoreticular tract: | chronic deep pain
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| spinocerebellar tract: | convey proprioception information from mm spindle and Golgi tendon organs, nessecery for coordination of movements
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| What tracs are also called piramidal | corticospinal tracts
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| what tracts are called extrapiramidal? | reticulospinal and rubrospinal tracts, and tectospinal tracts
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Created by:
kasia1
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