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24 Cards in this Set
- Front
- Back
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Which cranial nerve nuclei are located within the midbrain?
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CN III- Edinger-Westphal nucleus
CN III CN IV CN V- Mesencephalic nucleus |
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Which cranial nerve nuclei are located within the pons?
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CN V- Motor nucleus
CN V- Spinal tract nucleus CN VI CN VII- Sup. Salivatory nucleus CN VII- Motor Facial Nucleus |
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Which cranial nerve nuclei are located within the medulla?
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CN V- Spinal tract nucleus
CN VIII- Vestibular & Cochlear CN IX- Inf. Salivatory nucleus CN X- Dorsal motor nucleus CN XII Nuclear ambiguus of CN IX, X, XI Solitary tract of CN VII, IX, and X |
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Which cranial nerves are associated with the rostral medulla?
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Inferior salivatory nucleus of CN IX
Cochlear area nuclei of CN VIII Vestivular area nuclei of CN VIII |
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What are the major nerves at the level of the Superior Colliculus Mid-midbrain?
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CN III
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What are the major nerves at the level of the Inferior Colliculus Cadual Midbrain?
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CN IV
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What are the major nerves at the level of the Middle Pons?
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CN V
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What are the major nerves at the level of the Caudal Pons?
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CN VI
CN VII |
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What are the major nerves at the level of the Rostal Medulla?
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CN VIII
CN IX |
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What are the major nerves at the level of the Middle Medulla?
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CN X
CN XII |
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What are the major nerves at the level of the Caudal Medulla?
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CN X: sensory and motor
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What is the point of Lamination?
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The point is that sensory and motor information from various regions of the body are LOCALIZED to SPECIFIC regions of the tracts.
If a pt. presents w/ a deficit in a specific region, being aware of this orientation may be useful in pinpointing the problem. |
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The Caudal third of the Medulla is the level of what sensory decussation?
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EPICRITIC PATHWAY
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Where are the ascending axons carrying the EPICRITIC PATHWAY located?
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Dorsal Columns
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Where are the cell bodies of the EPICRITIC PATHWAY located?
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DRG
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What is the dorsal column divided into?
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Fasciculus Gracilus- lower body
Fasciculus Cuneatus (upper body) |
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Dorsal column axons of the EPICRITIC PATHWAY enter the medulla and synapse on cell bodies in the _______ and _______.
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Nucleus Gracilus
Nucleus Cuneatus |
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Axons of the EPICRITIC PATHWAY from the nucleus gracilus and cuneatus DECUSSATE and ascend as the _______.
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Medial Lemniscus
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The medial lemniscus terminates in the ____ nucleus of the _______.
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VPL
THALMUS |
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The Caudal third of the Medulla is the level of what motor decussation?
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PYRAMIDAL PATHWAY
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Fibers whose cell bodies are in the _______ descend through the brainstem into the PYRAMID of the medulla
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Cerebral Cortex
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In the most caudal portion of the medulla 85% of the Pyramidal Pathway fibers DECUSSATE and descend into the spinal cord as the _______.
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Lateral Coriticospinal Tract
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15% of the Pyramidal Pathway fibers in the pyramid do not cross but continue on the same side into the spinal cord as the _______.
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Ventral Corticospinal Tract
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Nucleus Ambiguus
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A component of the CN X
Contains cell bodies of the LMN (of cell bodies CN IX, X, & II) to skeletal muscle of the soft palate, phayrnx, larynx, upper esophagus -Efferent limb of the gag reflex |
