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19 Cards in this Set
- Front
- Back
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Where are the cell bodies for the UMN of the corticonuclear system?
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Precentral gyrus – laterally in association with the face area of the humunculus
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relative position of the motor nuclei for CN III
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Superior Colliculus
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relative position of the motor nuclei for CN IV
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Inferior Colliculus
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relative position of the motor nuclei for CN V
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Upper pons
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relative position of the motor nuclei for CN VI
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Lower pons
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relative position of the motor nuclei for CN VII
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Lower pons
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relative position of the motor nuclei for CN IX & X
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Open medulla
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relative position of the motor nuclei for CN XI & XII
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Closed medulla
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identify which are UMN cranial nerves innervated contralaterally
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VII [(facial--Lower part of face (buccinator etc)]
XI [spinal accessory--traps is contralateral, SCM is ipsilateral) |
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identify which are UMN cranial nerves innervated bilateraly
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III-oculomotor
IV-trochlear V-trigeminal VI-abducens VII-facial (upper part-obicularis oculi) IX-glossopharyngeal X-Vagus XII - hypoglossal |
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Describe clinical symptoms likely for individuals with lesions in Midbrain, in the right side, at the level of the superior colliculus.
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III –Right sided (ipsilateral ptosis) inferior lateral look, dialated pupil, lack of accomidation, double vision
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Describe clinical symptoms likely for individuals with lesions in Upper pons, on the left side.
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IV – right sided (contralateral) extortion and difficulty looking medially and down, double vision
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Describe clinical symptoms likely for individuals with lesions in Lower pons, on the right side.
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VI – Right sided (ipsilateral) adduction of eye and double vision
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Describe clinical symptoms likely for individuals with lesions in Open medulla, on the left side.
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IX & X – Vagus LMN. Hoarseness due to loss of ipsilateral motor nerves to larynx. Difficulty in swallowing. Note, because of loss of levator veli palitini M., uvula will bend towards unaffected side.
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Describe clinical symptoms likely for individuals with lesions in Closed medulla (just at the juncture of the open medulla), on the right side.
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XII - Deviation
of tongue to affected (Right) side |
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Location and function of Edinger-Westphal nucleus
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III – superior colliculus
Parasympathetics to the eye |
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Location and function of Superior salivatory nucleus
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VII – Pontomedullary junction
parasympathetic supply to the submandibular ganglion |
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Location and function of Inferior salivatory nucleus
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IX – Open Medulla
Parasympathetic to parotid gland |
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Location and function of Dorsal motor nucleus of the vagus
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X – Open Medulla
responsible for all vagal preganglionic parasympathetic axons, from the neck region all the way to the midgut |
