Origin
what is the origin for gracilis/cunateus
Gracilis= T6 and below (touch the grass)
Cuneatus= T6 and above
which neuron decussates in the gracilis/cuneatus track and where
2nd order, medulla
what information does gracilis and cuneatus transmit, what are the receptors
2 pt touch, fine touch (meissners)
vibratory, pressure (pacinian)
where do the anterior and posterior spinocerebellum synapse
ant= cerebellum via sup peduncle
post=cerebellum via inf peduncle
what CN goes with otic ganglion
9
what is the origin for spinothalamic
ant/ lateral= any cord level
where does the corticospinal tracts cross
lateral= medulla
ventral= at spinal level
what information does anterior and lateral spinothalamic control
lateral= pain and temp
anterior= light touch and pressure
where do ant/post corticospinal tracts synapse
ant= before T6
lat=all cord levels
what is the nucleus associated with CN 3
Edinger westphals, or ciliary
what is the origin for rubrospinal tract
nucleus rubor of midbrains TECTUM
which tract crosses 2 times
anterior spinocerebellar
what information does ant and post spinocerebellar transmit
ant- gross movement of lower body
post-fine movement proprioception
what tract synapses in lamina 7 and 9 at all cord levels
vestibulospinal
where is the superior salivatory N located and what CN
CN 7
-in the pons
what are the origins for ant/ post spinocerebellar
ant= lumbosacral
post= C8-L3 cell bodies in n.dorsalis
which 3 tracts does not cross
posterior spinocerebellar
vestibulospinal
reticulospinal
what information does tectospinal transmit
reflexive movement of neck m
superior colliculus= light
interior= sound
name all the pathways that synapse in the VPL of the thalamus
gracilis, cuneatus, ant/lat spinothalamic
where does CN 10 travel in parasympathetic
palate to first 2/3 transverse colon
what is the location of medial and lateral reticulospinal
medial= TEGMENTUM
lateral= medulla
which tract crosses abruptly and which crosses gradually
abrupt= lateral spinothamic
slowly= anterior spinothalamic
what does vestibulospinal and rubrospinal control
rubro= stimulate flexors "bros flex"
vestibulo= stimulate extensors
which receptor is involved with spinothalamic
free naked nerve endings (unmyelinated C fibers)
what are the 2 ganglia associated with CN 7
pterygopalantine gang
submandibular gang