cerebellar afferent fibers from spinal cord and vestibular nerve Flashcards
what are the cerebellar afferent pathways from SC
anterior spinocerebellar
posterior spinocerebellar
cuneocerebellar
rostral spinocerebellar
discuss path of anterior spinocerebellar
axons enter via DRG will synapse c nuc dorsalis on base of PGC
decuss and ascend as anterior spinocerebellar tract in contra LWC
tas enter via SCP the descussates back
terminates as mossy fibers in cerebellar cortex
discuss path of posterior spinocerebellar
axons enter via DRG will synapse c nuc dorsalis on base of PGC
tas axons will enter posterolateral part of LWC and ascend ipsi as posterior spinocerebellar
enters via ICP
then terminate as mossy fibers
may mga collateral branches that synapse c intracerebellar nuc - dentate
what does posterior spinocerebellar tract convey
info from muscle spindle, tendon organs and joint receptors of trunk and lower limbs
discuss path of cuneocerebellar
fibers originate in nuc cuneatus sa medulla
mag enter sa cerebellar hemis on ipsi ICP
terminates as mossy fibers
may collateral branches that synapse c deep cerebellar nuc
what does cuneocerebellar tract convey
info from muscle spindle, tendon organs and joint receptors of UE and neck
discuss the rostral spinocerebellar tract
least characterized
UE equivalent of anterior spinocerebellar kase LE daw yung anterior
enters cerebellum via ICP and SCP
discuss cerebellar afferent from vestibular nerve
vestib nerve afferent pass through ipsi ICP
some afferent pass vestib and synapse
fibers from inner eat terminate as mossy in flocollonodular lobe
what does semcircular canal detect
motion
what does utricle and saccule detect
postion relative to gravity
