physio VI last min Flashcards
lesion to somatosensorty cortex causes what
problems with graphesia and sterogensis
function of somatosensory II neurons
show attention to modulated response
damage to the anterior cerebral a could cause what kind of problems
foot and lower limb
damage to the middle cerebral a could cause problems where
face and face
what carries discrimiative touch
dorsal colum
lesion in the DC pathways causes what
ipsilateral problems
lesion in ALS pathway in spinacl cord causes what
contralateral problems
fibrillations
can only be recognized by electromygopjary
primary ending of muscle spindle is innervated by waht
group Ia fiber
2nd endering of muscle spindle is innervated by what
group II fiber
functino of co-activation of alpha and gamma motor neruons
precent unloding
primary ending o fmuscle spindle elicts what kind of reflex
phasic stretch reflex
tonic stretch reflex depends on what
primary and secondary endings
what innervates GTO
single group Ib fiver
what do Renshaw cells do
provide recurrent inhibtion of the alpha motor neuron that activates it
what sets the sensitivity of muscle spoindle
gamma cells
what does GTO measure
muscle tension, NOT length
where does the alteral vestibulspinal tract descend
all spinacl cord levels
what is the function of lateral vestibulospinal tract
posture, faciliate motor neuron of extensors
where does medial vestibulospinal tract descend
upper thorac
what does medial vestibulospinal tract do
medication of reflex of head in response to vestibular stimuli
where does the pontine reticulospinal tract descend
all spinal cord elvels
what is the function of the pontine reticulospintal tract
adjustment of posture and body balance
what is the function of reticulospinal tract
modulate reflex action during movement
where does the tectospinal tract descend
cerebical spinal cord
what is the function of the tectospinal tract
coordinate head and eye movement
what causes decrebrate posturing
lesion to upper pons
what causes decoricate posture
lesion of IC or upper midbrain/diencephal
what BA corresponds to primary motor cortex
4
waht BA corresponds to posterior pariteal
5 and 8
where does the alteral corticospinal tract cross
medulla
what is the function of lateral corticospinal tract
fractionation of movment
where does lateral corticospinal tract terminate
dorsal horn of spinal cord
what happens if you have a lesion limited to corticospinal tract in monkeys
can’t grasp obj with 2 fingers
what happens if you have corticospinal tract lesion in humns
weakness, babinksi
what causes superior alternating hemiplegia
leasion of midbrain
what causes inferior alternating hemiplesgie
medullar lesion
what happens if you have a problem with posterior cerebral a
visual problems
corpus striatum
neostiatum and paleostraim
what does cerebral cortex ecit
caudate and putmen
what do caudate and putamen do
inhibit globus pallidus
what does globus pallidus do
inibhit thalamus
what does the neospinothalamic tract go to
VPL of thalamus
what does the paleospinothalamic tract go to
DM of thalamis
what is the spinoreticular tract function
motor response to pain
spinomesencephalic tract function
regulation and modulation of pain experiention
how is ventroalteral PAG related to sympahteics
inhibits
how is dorsal PAG related to symphatetics
excites
what is the functino of vestibulocerebellum
equilbrium, gait and posture, control eye movement
wha thappens if you have a lesion to vestibulocerebellum
ataxic gait, eye movement disorder
function of vermis portion of spinocerebellum
regulate axiala nd proximal muscle, saccades
function of spinocerebullem intermeidate portion
distal muscle
lesion in intermediation portion of spinocerebellum causes what
hypotonia
lesion in cerebrocerebellum causes what
problem initating movement, multijoint movement, judge elapsed time
what do high fidelity tracts carry info for
unconsious proprioception for receptor in muscles, tendons and joints
what are granule cells exicted by
mossy fiber
locus coerulesu reslases what
nore
potine rephe release what
serotinin
dysfunction in dorsolateral prefrontal area
pt has trouble with excuative function
what is dopamine made by
ventral tegulat area
ciliary muscle contracts in response to wahat
parasym
homonymous hemianopia
contralateral optic tract damge
superior quadrant anopsia
contralat to lesion of meyers loop
hemianopia with macular sparing
lesion in optic radiation
deuteranopia
colorblindness due to lack of gene
posterior 1/3 of tongue is innercated by
CN IX
sensory to ear is
VIII
