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What A provides blood to the olive of the medulla?
Vertebral A
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What A provides blood to the pyramid?
Anterior Spinal A
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What A provides the inferior cerebellar peduncle?
PICA
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What A provides the gracile and cuneate fasciculus?
Posterior spinal A
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What fibers form the medial lemniscus?
Internal Arcuate fibers from the fasciculus gracilis and cuneatus
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What are the three descending tracts of the caudal medulla?
- Medial Longitudinal fasciculus
- pyramids
- spinal trigeminal tracts
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What body appears in the mid-medulla to separate it from caudal medulla?
- Restiform Body
- Medial and Inferior vestibular nuclei
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What nucleus takes place of the dorsal motor nerve of vagus in the rostral medulla?
Inferior salivatory nuclei
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After the caudal medulla, what A is no longer present?
Posterior Spinal A off of PICA (PICA now picks up its areas)
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In what area of the medulla (Caudal, Mid, or Rostral) can you find the gracile fasciculus and the cuneate fasciculus?
Caudal
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What regions of the medulla can you find the medial and inferior vestibular nuclei?
Mid and Rostral
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Where does the Cochlear nuclei appear?
Rostral Medulla
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What A feeds the cochlear nuclei?
AICA
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What CN are associated with the Pons?
V, VI, VII
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What CN are associated with the medulla?
VIII, IX, X, XI, XII
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What three A supply the middle cerebellar peduncle?
SCA, AICA, Circumferential branches off of Basilar A
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When does the inferior vestibular nuclei disappear?
Caudal Pons
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What vestibular nucleir are present in the caudal pons?
Medial, lateral and superior
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When do the mesencephalic tract and the locus ceruleus begin to appear?
Mid Pons
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Where do the trigeminal motor and principal sensory nuclei appear?
Mid Pons
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What nuclei are no longer present in the mid pons?
Facial and abducens
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What CN are associated with the midbrain?
III, IV
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Where does the trochlear nucleus appear?
Intercollicular level of the caudal midbrain
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Where does the Red Nucleus appear?
Rostral Midbrain
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Where does the occulomotor and Edinger-Westphal nuclei appear?
Rostral Midbrain
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Where do the pretectal nuclei appear?
Midbrain/diencephalon junction below the superior colliculus
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Where do climbing fibers originate?
Inferior olivary nuclei
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How many purkinje cells can one climbing fiber synapse?
1 : 1 ratio
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how do climbing fibers enter the cerebellum?
ICP
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How do mossy fibers enter the cerebellum?
ICP, MCP, SCP
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How many granular cells can one mossy fiber synapse?
many
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Where is the accessory nucleus found? What is its function?
- Cervical Spinal Cord
- SE, CN XI, SCM and Trapezius
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What CNs are associated with the Spinal Trigeminal Nerve?
V, VII, IX, X
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What CNs are associated with the Nucleus Ambiguous?
IX, X, XI
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What does the Spinal Trigeminal Nucleus do?
Pain and temperature sense to face
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What Nucleus performs discriminative touch and conscious proprioception of the face?
Spinal Trigeminal Principal sensory nucleus
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What four arteries give off segmental arteries?
- Vertebral A
- Anterior Cervical A
- Posterior intercostal A
- Lumbar A
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What are the branches of the Vertebral Segmental Arteries?
Posterior and Anterior spinal medullary arteries
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What are the five ascending tracts of the spinal cord?
- Fasciculus gracilis
- Fasciculus cuneatus
- Post. spinocerebellar
- Ant. Spinocerebellar
- Anterolateral system
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Where is the mesencephalic tract located?
Mid Pons and Midbrain
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Where is the Nucleus Ambiguous located?
Medulla
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Where does the central tegmental tract appear?
Caudal Pons
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What five areas of the cerebellum does the SCA enter?
- MCP
- SCP
- Superior hemisphere
- Superior vermis
- All 4 nuclei (Fastigial, globus, emboliform, dentate)
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What four areas does the AICA enter in the cerebellum?
- MCP
- Flocculus
- Inferior hemisphere
- dentate nucleus
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What four areas of the cerebellum does the PICA enter?
- Inferior Vermis
- Nodulus
- Tonsil
- ICP
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In what part of the cerebellum do fibers from the Purkinje Fibers exit?
ICP, SCP
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What thalamic nucleus is associated with Brodeman areas 1,2,3 somatosensory?
VPL, VPM
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What thalamic nucleus is associated with Brodeman area 4 Motor?
Ventral Lateral
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What thalamic nucleus is associated with Brodeman area 17 visual?
Lateral Geniculate
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What thalamic nucleus is associated with Brodeman area 41 Auditory?
Medial Geniculate
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What artery do the thalamoperforating and thalamogeniculate Arteries branch from?
Posterior cerebral A
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What what level does the Lateral lemniscus stop appearing?
Rostral Midbrain
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Where is the nucleus ambiguous located?
Medulla
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Where does the Spinal Trigeminal tract end?
Pons
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Where is the solitary tract and nucleus found?
Medulla
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