week 5 lab Flashcards
caudal commissure
where cross over of pretectal neurons for PLR occur (left to right)
tectum composed of
rostral colliculus and caudal colliculus
rostral colliculus
lateral geniculate nucleus feed into rostral colliculus and riggers UMN for neck muscles for sight avoidance
caudal colliculus
sound avoidance
tegmentum
ventral portion; LMNs of CNN III and IV; UMN centers (3)
crus cerebri
axons of neurons from the frontal lobe (the umn that lives in the frontal lobe)
mesencephalic aqueduct divides midrbain into
dorsal poriton and ventral portion;
dorsal portion is the
tectum
ventral portion is the
tegmentum
tegmentum contains
LMN of CN 5 and UMN center
rostral medullary velum
thin membrane forming roof of 4th ventricle; decussation of CN IV in rsotral medullary velum
obex is important in
prion disease
peduncles on ventral surface of cerebellum
axons going into and out of cerebellum (middle caudal rostral; named on where they tie into the brainstem)
transverse pontine fibers become
middle cerebellar peduncles
vestibular trigone
vestibular n. information feeds in here (info from semicircular canals)
vestibular nuclei live in
vestibular trigone
what are the functions of vestibular nuclei
send axons down white matter of cord an talk to LMN (so it is an umn)
travel rostrally to talk to LMN of CN 3,4,6: fast phase clicking in direction of head turn (niastagmus)
hearing from CN 8 travel into
cochlear nucleus
lateral geniculate body _____
conscious vision relay
medial geniculat body _____
conscious auditory relay
brachium of rostral colliculus
connects rostral colliculus and lateral geniculat
brachium of the caudal colliculus
connects caudal colliculus and medial geniculate
what are the basal nuclei
caudate nucleus (head an dbody) lenticular nucleas (lentiform nucleus)
what is the fornix composed of
axons of hippocampus and parahippocampus
basal nuclei function in
inhibitory to frontal cortex; fine motor ability control repsiration in primates (parkinsons disease)
