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10 Cards in this Set
- Front
- Back
Red Nucleus
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In midbrain
-Motor Nucleus of the rubrospinal tract (crosses midline at VTD, projects to interneurons in V-VIII) -participates in a circuit linking the inferior olive and cerebellum |
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Substantia Nigra
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-midbrain, uses dopamine
-receives input from the putamen and caudate nuclei of the basal ganglia and sends fibers back -sends fibers to thalamus |
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Superior Colliculus
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-midbrain
-receives input from Optic N. -Origin of tectospinal tract which controls posture and head movements in response to visual stimuli. Crosses midline at MTD, projects bilaterally to motor neurons in s.c. -controls visual reflexes |
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Inferior Colliculus
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-midbrain
-major auditory nucleus -sends fibers to MGB medial geniculate body (thalamus) -receives input from the superior olivary nucleus through the lateral lemniscus |
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Pontine Nuclei
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-pons
-receives input from cerebral cortex through cerebral peduncle -output to contralateral cerebellar hemisphere through middle cerebellar peduncle |
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Superior Olivary Nucleus
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-pons
-forms lateral lemniscus -in auditory pathway between cochlear nuclei and inferior colliculus |
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Inferior Olivary Nucleus
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-medulla
-input from red nucleus, s.c. -fibers cross midline to enter cerebellum through inferior cerebellar peduncle |
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Nucleus of the Solitary Tract (Solitary nucleus)
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-medulla
-inputs: taste from VII, IX, X -outputs: taste to thalamus, visceral reflex to Dorsal Motor nucleus of X, reticular formation |
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Spinal Accessory nucleus
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-rostral cervical s.c. (C1-C6)
-innervates trapezius and SCM -fibers ascend to join with fibers of X and IX thru foramen magnum |
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Dorsal Column Nuclei
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-medulla
-Nucleus Gracilis (leg, medial), Nucleus Cuneatus (arm, lateral) -Receives fine touch/discriminatory sensation/pressure from spinal cord -crosses midline as internal arcuate fibers, ascends as medial lemniscus -projects to VPL nucleus of thalamus |