Gray matter config Flashcards
Nucleus dorsomarginalis- location, levels, function
dorsal, all levels
Pain and temp sensation (from lissaeurs tract)
Substantia gelatinosa- loc, levels, function
dorsal, all lvls
Relays pain, temp, touch
Nucleus proprious- loc, levels, function
dorsal, all lvls
relays mechanical and temp sensation to brain
Nuckeus dorsalis of clarke- loc, lvls, func
lateral horn, t1-L2
relays unconsious proprioceptive info
Intermediomedial and interomediolat nuc- loc,lvls, func
lat horn, t1-l2
Relays sensory info from viscera to brain (autonomic signals)
Sacral parasympathetic nucelus- loc, lvls, func
Lat horn, S2-4
Parasympathetic pre ganglionic axon buncles
Medial motor nuc- loc, lvls, func
Ventral horn, all lvls
Supplies axial muscles
Lat motor nuc- loc, lvls, func (dorsal and ventral func)
Ventral horn, c5-t1, L2-S3
Supplies mm of upper and lower limbs
dorsal- flexor mm
ventral- ext mm
Spinal accessory nuc- loc, lvls, func
ventral C1-5 (lat motor nuc replaces this after)
supplies scm and traps
Phrenic nucleus- loc, lvls, func
Ventral, c3-5 supplies mm of diaphram
Onufs nuc- loc, lvls, func
Ventral, s2-4
supply muscles of perineum (urine/feces)
Lamina 1- corresponding nuc and flow+ function
(nucleus dorsomarginalis)
sends pain/temp/touch (bad) to contralat lateral spinothalamic tract
Lamina 2- corresponding nuc and Flow+ function
(substantia gelantonosa)
- transmits slow pain conduction to lamina 3/4
- modulates pain before sending info
Lamina 3/4- corresponding nuc and Flow+ func
(Nucleus proprius)
Mediates pain/temp/touch from lamina 2
contributes to contralat lat spinothalmic tract (pain/temp) and ant spinothalamic tract (crude touch)
Lamina 5/6- corresponding nuc and flow + func
(nucleus proprius)
Proprioceptive signals from jnts (medial part recieves direct info while lat gets collaterals to modulate)
Sends info to contralat lateral spinothalamic tract and ant spinothalamic tract
Lamina 7- corresponding nuc, flow + func
(dorsal nucleus of clarke)
axons go to dorsospinal cerebellar tract (posture signals), below L3 axons cross midline and go to ventral spinocerebellar tract
also functions as general visceral sensation
Lamina 8- corresponding nuc, flow + func
(commissural nucleus)
recieves axons from vestibulospinal and reticulospinal tracts
-modulates firing of postural muscles
Lamina 9- corresponding nuc, flow + func (med and lat)
(motor nuclear groups)
Large A and G motor neurons
recieve info from lat corticospinal and rubrospinal tracts
voluntary motor control (med- axial mm, lat upper/lower limbs)
Lamina 10- loc, function
Porion of gray matter surrounding central cannal
- holds the decussating fibres
