[ANAT] TRACTS OF UNCONSCIOUS PROPRIOCEPTION Flashcards
function
carry unconscious proprioception to cerebellum
posterior spinocerebellar tract carry proprioception from
lower limb & trunk
central processes of PSCT enter spinal cord via
dorsal root
central processes of PSCT end on
ipsilateral Clarke’s nucleus
ascension of PSCT
ipsilaterally in lateral white column
PSCT enters cerebellum via
inferior cerebellar peduncle (ICP)
ASCT carries proprioception from
lower limb
central processes of ASCT enter spinal cord via
dorsal root
ASCT ends on
laminae 5-7
ascension of ASCT axons
most decussate
few remain ipsilateral
ASCT fibers enter cerebellum via
SCP
spino-olivary tract carries proprioception from
UL & LL
ascension of spino-olivary tract
its 2nd order neuron fibers cross & ascend at junction of lateral & ventral white columns
spino-olivary tract fibers end on
contralateral olivary nuclei
olivocerebellar fibers cross & pass to cerebellum via
ICP
collateral from cuneate tract carry proprioception from
UL to accessory cuneate nucleus of the medulla
axons of accessory cuneate nucleus form
cuneaocerebellar tract
fibers of cuneate tract collaterals enter cerebellum via
ICP
tracts which remain ipsilateral to cerebellum
PSCT
cuneate collaterals
tracts that cross/decussate before ending in the cerebellum
ASCP
spino-olivary