Rexa Lamina Flashcards
Rexa Lamina I
Thin cap over dorsal horn
Rexa Lamina II
Substantia Gelatinosa
Pain reception center
Rexa Lamina III and IV
Nucleus Proprius
Sensory of touch, pressure, etc.
Rexa Lamina V
Reticular Formation - cervical part only (C1-C8)
Cell bodies for axons that cross and ascend to thalamus in spinal thalamic tracts
Rexa Lamina V found…
All cord levels
Reticular Formation found..
C1-C8
Rexa Lamina VI
May be absent at some cord levels
Rexa Lamina VII
- Many descending tracts synapse here
- Nucleus Dorsalis (C8-L3)
- Intermediolateral Nucleus
Rexa Lamina VIII
Medial aspect of anterior horn
Rexa Lamina IX
Class A alpha motor neurons to skeletal muscle
Rexa Lamina X
Central canal passes through
Ant gray commissure
Post gray commissure
Tract that synapses on Lamina III, IV
Anterior spinothalamic
Lamina V contains cell bodies that….
Send axons to contralateral spinothalamic tracts
Lamina VI is the most…
Anterior aspect of dorsal horn
Corticospinal tract fibers synapse with neurons in Lamina
VII
Nucleus Dorsalis present in
C8-L3
Lamina VII
Cell bodies in Nucleus Dorsalis contribute axons to
Posterior spinocerebellar tract
Intermediolateral nucleus forms bulk of lateral horn cell bodies from..
T1-T12
Preganglionic sympathetic neurons present in
T1-L2 of Intermediolateral Nucleus
Preganglionic parasympathetic neurons present in
S2-S4 of intermediolateral nucleus
Lamina VIII present in
Medial aspect of anterior horn
