random stuff you keep forgetting Flashcards
what supplies the fasciculus cuneatus and gracilis in SC
posterior spinal
what supplies the spino cerebellar pathways in the SC
ant spinal
what supplies the corticospinal pathways in the SC
ant spinal
where does the decussation happen for the corticospinal pathway
decussation of the pyramids
where does the decussation happen for the DCML
near the center of the medulla (rostral to decussation of pyramids but caudal to open medulla)
where does decussation happen for spinothalamic
anterior white ocmmisure
Lesion to DCML pathway unilateral symptoms at one level only?
dorsal horn, spinal level, exiting nerve
Lesion to DCML pathway bilateral symptoms
internal arcuate fibers
Lesion to DCML pathway ipsilateral symptoms below level
white matter (dorsal column)
lesion to DCML pathway with contralateral suymtpoms
above decussation
lesion to SPTH that would cause bilateral symptoms at level only
anterior white commissure
lesion nto SPTH that would cause ipsilateral symptoms below level of lesion
not possible
lesion nto SPTH that would cause ipsilateral symptoms at level of lesion
dorsal horn
lesion to corticospinal that would result in ipsilateral symptoms below level
lesion to UMN below the level of decussation (ex: in the lateral column)
lesion to corticospinal that would result in contralateral below level
above decussation (above the decussation of pyraminds0
lesion to corticospinal that would result in contralateral at level
impossible
lesion to corticospinal that would result in ipsilateral at level
LMN lesion (anterior horn, spinal n)
in the rostral medulla, what supplies the medial lem
anterior spinal
in the rostral medulla, what supplies the spinal lem
PICA
in the rostral medulla, what supplies the corticospinla tract
anterior spinal
in the pons, what supplies the medial lem
basilar
in the pons, what supplies the spinal lem
basilar (some superior cerebellar)
in the pons, what supplies the cortcispinal tract
basilar
in the midbrain, what supples the medial lem
posterior cerebral
in the midbrain, what supplies the spinal lem
posterior cerberal
in the midbrain, what supplies the corticospinal tract
posterior cerebral
where is synapse between 1 and 2 in DCML
nucleus cuneatus/gracilis
where is synapse between 1 and 2 in SPTH
dorsal horn (nucleus proprius0
where is synapse between 1 and 2 in trigeminal lemnicus pathway
chief sensory nucleis
where is synapse between 1 and 2 in trigeminothalamic pathway
spinal trigeminal nucleus
where is synapse between 2 and 3 in DCML
VPL
where is synapse between 2 and 3 in SPTH
VPL
where is synapse between 2 and 3 in trigeminal lemn
VPM
where is synapse between 2 and 3 in trigeminal thalamo
VPM
where is synapse between 1 and 2 in dorsal spinocerebrllar
dorsal horn C8-l2/3 (nucleus dorsali
where is synapse between 1 and 2 in cuneo spinocerebrllar
accessory nucleus cunteaus
where is synapse between 1 and 2 in ventral spinocerebrllar
lumbar spinal border cells
where is synapse between 1 and 2 in rostral spinocerebrllar
cervical spinal border cells
blood supply to dorsal roots/rootlets
posterior spinal
blood supply yo dorsal horn
posterior spinal
blood supply to nucleus cuneatus/gracilis
post spinal
blood supply to internal arcuate
ant spinal and vertebral
blood supply to medial lem in rostral med
ant spinal
blood supply to medial lem in pons
basilar
blood supply to medial lem in rostral midbran
posterior cerebral
blood supply to thalamus
posterior cerebral (deep)blo
blood supply to posterior limb internal captsule
anterior choroidal
blood supply to primary somatosensory for lower limb
anterior cerebral
blood supply to primary somatosensory for everything except lower limb
middle cerebral
blood supply to anterior white s=comissur
ant spinal
blood supply to spinal thalamic tract
anterior spinal
blood supply to spinal lem in rostral medulla
PICA mostly
blood supply to spinal lem in pons
basilar (superior cerebrellar)
blood supply to spinal lem in midbrain
posterior cerebral
blood supply to rednucleus
posterior cerebral
blood supply to substantia nigra
posterior cerebral
blood supply to superior and inferior colliculi
superior cerebellar peduncle
blood supply to middle cerebellar peduncle
AICA
blood supply to sup cerebellar peduncle
superior cerebellar a
blood supply to the pyramids
ant spinal
blood supply to the inferior oliva=ry nuc
vertebral
blood supply to inferior cerebellar peduncle
PICA
blood supply to optic n
ophthalmic a
blood supply to optic chiasm
anterior cerebral nad branches of IC
blood supply to optic tract
anterior choroidal and posterior comminication
blood supply to LGN
deep posterior cerebral
blood supply to primary visual cortex
posterior cerberal
blood supply to olfactory n
opthalmic and branches of anterior cerebralblood supply to olfactory n
blood supply to olfactory bulb and tract
anterior cerebral
blood supply to primary olfactory cortex
posterior and middle cerebral
and anterior choroidal
what are the two brainstem nuclei that went thru secondary migration (moved more ventrally)
branchial motor and somatic sensory
where are the primary cell bodies located for extrapyramidal pathways
specialized brainstem nucleu
sensory neurons are what type
pseudo
motor neurons are what type
multipolar
where does decussation of the pyramids happen
spin-medullary junction (caudal medulla_
UMN lesions cause contralateral or ipsilateral sumptomd
both, depending on location of lesion
abobe=contra
below=ipsi
UMN symptoms will be below or at level of lesion
below
UMN symptoms will be below or at level of lesion
at
will LMN symptoms of cortcio be ipsilateral or cortalateral
psi
function of rubrospinal
archimotor
facilitate flexor position
function of tectonspinal
reflexive he’d and eye movements to auditory or visual stim
function of reticulospinal
balance, posture, stablity
pontine fibers = extensor
medullar fibers= flexor
function of vestibulo
contreols antigraviry extensor muscles to help maintain balance and posture (stabilize head)
decerebrate is flexor or extensor posturing
extensor (rubro damage)
decorticate is flexor or extensor posturing
flexor (rubro fine)
substaintioan nigra lovation
rostral midbrain
parkinson’s symptoms and where damage
damage to substantia nigra pars compacta
=akinesia
=bradykinesia
=tremors
=rigidity (esp flexors)
hntingon symptoms and where damage
daamge to dorsal straitum
=chorea (jerky, =uncrontorllable movemetns)
=cogntiion and memory issues
=enlargement of ventricles
ballism symptoms and where damage
damage to subthalamic nucleus
=uncontrollable flinging of the limbs
salivatory reflex pathway
olfactory pathway projects to habenula and hypothalamis
=projects down to superior and inferior salviatory nucleus
(contain preganglionic parasympathetic cell bodies that go down to salivary glands)
increase digestive processes reflex pathawy
olfactory pathway projects to hypothalamis
=projects down to dorsal motor nucleus of the vagus n
where is the oculomotor nucleus located
rostral midbrain (superior colliculi)
where is the accessory oculomotor nucleus located
rostral midbrain (superior colliculi)
where is the trochlear nucleus located
caudal midbrain (inferior colliculsu(
where is the abducens nucleu located
caudal pons
what is in cavernous plexu
auducens n
trochlear n
oculomotor n
trigeminal (othpthalmic, maxillary)
IC
carotid plexus
what does the lateral subnucleis supply
IR, IO, MR ipsilateral
what does the medial subnucleis supply
SR contralateral
what does the central subnucleis supply
lev palp (bilateral)
where is the mesepehalic trigmeinal nucleus located
midbrain to the pons
where is the chief trigeminal sensory nucleus located
pons
where is the spinal trigeminal sensory nucleus located
pons to C3
where is the motor trigmeinal nucleus located
pons where the trigeminal n is (middle pons)
can the trigmeinal tract be located in the caudal pons
no, it must be near the chief nucleus level (middle pons)
what is the only cranial n involved jaw jerk
mandibular branch of trigeminal
where are the facial n nucleis
caudal aspect pons
what are the nuclei located in the rostral midbrain
pretectnal nuclei
mesephealic trigeminal motor m=nuclei
occulumotor nuclei
accessory oculomotor
red nucleus
what are the nuclei located in the caudal midbrain
pretectnal nuclei
trochlear nucleis
mesencepjanic trigemian nuclei
what are the nuclei located in the mid pons
trigeminal motor nucelus
chief motor nucleis
what are the nuclei located in the caudal pons
facial motor nucleis
superior salvatori nucleus
abducens nucleis
spinal trigeminal senosyr nucleus
=nucleus solitaris
what are the nuclei located in the rostral medulla
inferior olivary nucleus
what are the nuclei located in the caudal meduall
nucleus gracilis and fasiculis
