Vosko II Flashcards
7,9,10 pain from where
ear
synapse of VTT
ascend contralateral side
second synapse VTT
VPM thalamus
primary somatosensory Cs next
pain R in face
TRPvchannel
where does VTT enter and where does it go
pons
descends to medulla and synapses spinal trigeminal nucleus
decussation VTT
in medulla
second synapse VTT
VPM thalamus to somatosensory cortex
basic two point discrimination on face
dorsal trigeminothalamic
bilateral
DTT tract
enters pons and synapses on mesencephalic nuc V b/l in pons then ascends to VPM thalamus
voluntary motor control travels through what
corticobulbospinal pathway or corticospinal
CN III IV VI activated through what
not corticospinal!
preserved in ALS(leu-gerings)
hypoglossal contralateral or ipsi
contra
lateral corticospinal tract
control of limbs
cervicothoracic level decussation of corticospinal.
turn into LMN for axial mm
ventral/anterior corticospinal tract
extrapyramidal
tectospinal
reticulospinal
rubro
vestibulospinal
tract to take over when have loss corticospinal
reticulospinal
tract if tap someone on shoulder
tectospinal pathway
orient to appropriate stimulus
cerebellar circuit
enter cerebral fiber, mossy fibers which synapse on granule cells and bifurcate become paralell fibers which synapse purkinje fibers and go to deep cerebellar nuclei
inferior olive
contra lateral to cerebellum giving it a beat or metronom to keep cerebellum up to speed in movements
Inferior olives synapse
turn into climbing fibers which synapse on purkinje cells
direct basal ganaglia
glutamate is positive to striatum which inhibits globus pallidus internal that usually inhibits thalamus (VA VL) to motor Cx
increase movement
glutamate on direct basal ganglia
excitatory +
dopamine + D1
indirect basal ganglia
\+ glutamate striatum inhibits globus external which usually inhibits to subthalamic get more + to globus pallidus internal which inhibits thalamus inhibits signal to motor Cx less mvoement
dopamine on basal ganglia
inhibits indirect pathway D2
activates direct pathway
papez circuit
cingulate gyrus to parahippocampal dyrus to hippocampus to fornix to mammillary body to ant nuc of thalamus to cingulate gyrus
pathway of memory consolidation
neoCx to parahippocampal gyrus to entorhinal Cx to dentate to CA3 to CA1 to subiculum and back to entorhinal
ligh transduction
11 cis to trans
activates transducin
activates cGMP phosphodiesterase which hypopolarize (turn off because always on!)
visual pathway
R(rods and cones) to bipolar cells to ganglion cells to lateral geniculate to primary visual Cx
contralateral layers in lateral geniculate nucleus
1,4,6
ipsilateral layers in lateral geniculate nucleus
2,3,5
layers parvo cells (fine detail and color)
layers magno cells
1 2: magnocells
3-6 parvocells (fine detail and color)
anything in L visual field
R side of brain
lesion to optic nerve on R side
loss of both field in right eye
MS ocular sign
neuritis
lose central vision “scotoma” ipsi side
pressure on optic chiasm
lose lateral visual fields
b/l hemianopia
damage optic tract on R
lose L visual field
hematomous hemianopsia
R inferior radiation loss
myers
lose superior half contralateral
“quadrantanopsia”
baums loop lose superior radiation
lose contralateral optic radiation
inferior visual field
fall back on head hit occiput Cx
sign
bilateral scotoma
lose central field in both eyes
lateralization auditory system
bilateral
superior olivary nucleus
lateral lemniscus
inferior colliculus
to medial geniculate nucleus
to primary auditory Cx
