lecture 3 Flashcards
is cervical or sacral enlargement bigger
cervical
Sc ends at level
l1/l2
function film terminal
anchor Sc to sacrum
features of thoracic Sc
grey matter, smaller anterior horns
has lateral horn (visceral motor vibers)
features of lumbar SC
big anterior horns
less white matter
T/F white matter gets bigger as we go down cord
False, smaller as you go down
3 functions of SC
pathway
reflex
location
two main sensory tracts
fascicles gracilis
fascicles cunaeatus
where are fas gracilis and fas cuneatus found
dorsal column SC
order of lateral cortico tract to grey matter
C T L S
order of spinothalamic tract to grey matter
C T L S
whats first to come and first to go out
first out is C first in is S
role of lateral cortico tract
voluntary movement of extremities
skill
role of anterior corticospinal tract
innervation of core, posture, stability
does ACST cross ever
no
where does LCST cross
anterior commissure
caudal medulla
somatotropin arrangement
Arm trunk limb
Ant to Post
has cortispinal crossed at pyramids
no
corticspinal tract originates where
in primary motor cortex: UMN
where does corticspinal tract synapse
LMN
where does CST cross
caudal medulla “pyramidical deccusation”
how to motor fibres travel
anteriorly
T/F left side of cortex interravte Left side of SC
Left cortex does RIGHT body
vestibulospinal tract
balance, posture, mm tone
when to vestibulospinal and reticulospinal tract cross
SC
parts of corticospinal tract
lateral and anterior
reticulospinal tract
posture, mm tone
tectospinal tract
direct eyes, head neck
