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8 Cards in this Set

  • Front
  • Back
mesencephalon
function or contents
auditory and visual reflexes
CN III and IV nuclei
vertical conjugate gaze
contains substantia nigra and reticular formation
Mesencephalon
tectum, tegmentum, base (basis pedunculi)
tectum: dorsal to the aquaduct
tegmentum: CN nuclei and sensory pathways
base: 3 tracts
corticospinal
corticobulbar
corticopontine
cerbral aquaduct AKA...
surrounded by...
aquaduct of Silivias
surrounded by:
~periaquaductal gray- locus ceruleus (blue): contains nuclear groups
~CN IV
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
medial longitudinal fasciculus (MLF)

[mesencephalon]
vestibular fibers that coordinate eye mvmt
interconnect ocular motor nuclei III, IV, VI (R3 LR6 SO4)
two parts of substantia nigra

[mesencephalon]
pars compacta-melanin
pars reticularis-

receives GABA, sends out dopaminergic and non-dopaminergic fibers
Medial lemniscus
dorsal column ---medial lemniscus--VPL of thalamus (ventral posterolateral)
Edinger-Westphal Nucleus

{mesencephlaon}
innervates ciliary body - accomodation
and sphincter mm of iris (pupillary light reflex)