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8 Cards in this Set
- Front
- Back
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mesencephalon
function or contents |
auditory and visual reflexes
CN III and IV nuclei vertical conjugate gaze contains substantia nigra and reticular formation |
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Mesencephalon
tectum, tegmentum, base (basis pedunculi) |
tectum: dorsal to the aquaduct
tegmentum: CN nuclei and sensory pathways base: 3 tracts corticospinal corticobulbar corticopontine |
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cerbral aquaduct AKA...
surrounded by... |
aquaduct of Silivias
surrounded by: ~periaquaductal gray- locus ceruleus (blue): contains nuclear groups ~CN IV |
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mesencephalon
superior and inferior colliculi |
superior colliculus: visual (it also receives auditory infor from inf coll. to mediate audiovisual reflexes)
inferior colliculus: auditory to medial geniculate body |
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medial longitudinal fasciculus (MLF)
[mesencephalon] |
vestibular fibers that coordinate eye mvmt
interconnect ocular motor nuclei III, IV, VI (R3 LR6 SO4) |
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two parts of substantia nigra
[mesencephalon] |
pars compacta-melanin
pars reticularis- receives GABA, sends out dopaminergic and non-dopaminergic fibers |
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Medial lemniscus
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dorsal column ---medial lemniscus--VPL of thalamus (ventral posterolateral)
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Edinger-Westphal Nucleus
{mesencephlaon} |
innervates ciliary body - accomodation
and sphincter mm of iris (pupillary light reflex) |
