lab 5 - ascending pathways Flashcards
Lissauer’s Tract
white matter any fiber that want to go into the dorsal horn travel through this
Lissauer’s Tract injury
injury or lesion that level of information my be offset a level of two
dorsal white matter two part
gracile fasiculus
cuneate fasiculus
medial division fibers enter how
Medial division fibers will
enter the Spinal cord through the
Dorsal white matter funiculus.
Large fiber afferents
Lateral division fibers enter how
Lateral division fibers
will enter the spinal cord
through Lissauer’s tract and then
terminates in dorsal horn gray
matter.
Small fiber afferents
Medial division of dorsal
roots carry what kind of information
large fiber afferents;
heavily myelinated; jps, vibr.,
Discrimin touch, crude touch
Lateral division of the
dorsal roots carry what kind of information
small fiber afferents;
lightly myelinated;
Pain & temp., crude touch
DCML Tract function
carries ascending somatosensory information regarding vibration, joint position and discriminative touch from the body to the cerebral cortex.
spinothalamic tract function
carries ascending sensory information regarding pain and temperature from the body to the cerebral cortex.
Dorsal Spinocerebellar Tract (DSCT) peri is where
muscle spindle
Dorsal Spinocerebellar Tract (DSCT) celll body is where
dorsal root ganglion
Dorsal Spinocerebellar Tract (DSCT) 1st order neuron synapses where
Clarke’s nucleus
Dorsal Spinocerebellar Tract (DSCT) travels isp or contra
isp
Three Spinocerebellar Tracts
Dorsal Spinocerebellar Tract:
Cuneocerebellar Tract :
Ventral Spinocerebellar Tract:
Dorsal Spinocerebellar Tract: carries what information
mm. spindle info about LE (individual/groups of muscles)\
non-conscious information from LE/trunk (below C8)
