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16 Cards in this Set

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  • Back
What is the input, output, & role for Lamina VIII Interneuron Pool?
input: descending pathways from corticospinal, vestibulospinal, & reticulospinal systems

output: project to lamina IX

role: motor control
What is the input, output, & role for Lamina IX (entire cord) dorsomedial?
input: Receives info from upper motor pathways & Iα Iβ and pain afferents

output: trunk flexors

role: axial motoneurons
What is the input, output, & role for Lamina IX (entire cord) ventromedial?
input: receives info from upper motor pathways and & Iα Iβ and pain afferents

output: Trunk flexors

role: axial motoneurons
What is the input, output, & role for Lamina
input: Receives info from upper motor pathways & Iα Iβ and pain afferents

output: forearm and leg flexors and extensors

role: appendicular motoneurons
What is the input, output, & role for Lamina IX (c5-c8,L2-S2) Ventrolateral?
input: receives info from upper motor pathways and I

output: arm & thigh flexors and extensors

role: appendicular motorneurons
What is the input, output, & role for Lamina IX (C8,T1,S1-S2)Retrodorsolateral?
input: Receives info from upper motor pathways & Iα Iβ and pain afferents

output: hand & foot flexors and extensors

role: appendicular motoneurons
What is the input, output, & role for Lamina IX (C3-C5) Central (phrenic)?
input: Receives info from upper motor pathways & Iα Iβ and pain afferents

output: diaphragm

role: motor control
What is the input, output, & role for Lamina IX (C1-C6) spinal accessory?
input: Receives info from upper motor pathways & Iα Iβ and pain afferents

output: lower sternocleidomastoid and trapezius

role: motor control
What is the input, output, & role for Lamina I (entire cord) Posterior marginal nucleus
input: receives info from small non-myelinated afferent fibers for prickling type pain, tickling, coolness

output: fibers ascend crossed and uncrossed to brainstem and thalamus

role: perception of painful stimuli
What is the input, output, & role for Lamina II & III (entire cord) Substantia gelatinosa?
input: receives nociceptive fibers and input from medullary reticular formation

output: ascend and/or descend in lissauer's tract

role: relay nuclei for pain and temperature
What is the input, output, & role for Lamina IV & V (entire cord) Nucleus Proprius (reticular nucleus)?
input: large caliber fibers for light touch. Receives descending pathways.

output: fibers crossed or uncrossed to the brainstem and thalamus

role: plays a role in both proprioception and refered pain
What is the input, output, & role for Lamina VI (C4-T1, L2-S3) Commissural Nucleus?
input: receives peripheral cutaneuous and visceral afferents as well as, corticospinal and rubrospinal fibers and some muscle afferents

output: primary anterior spinothalamic tracts, some fibers cross to form lateral spinothalamic tract

role: plays a role in both proprioception and referred pain
What is the input, output, & role for Lamina VII (C8-L3) Nucleus Dorsalis of Clarke?
input: large caliber fibers (1 alpha & 1 beta) from proprioceptive receptors of skeletal muscle.

Output: gives rise to spinocerebellar pathways

role: proprioception
What is the input, output, & role for Lamina VII (T1-L3, S2-S4) Intermediomedial cell column?
input: receives viceral afferent autonomic activities. Afferents may come back into the NS via the anterior root.

output: gives rise to spinocerebellar pathways

role: visceral sensations
What is the input, output, & role for Lamina VII (T1-L3) Interomediolateral cell colum?
input: receives viceral afferent autonomic activities. Afferents may come back into the NS via the anterior root.

output: pre-ganglionic sympathetic cells

role: visceral motor
What is the input, output, & role of Lamnia VII (S2-S4) Nucleus of Onufrowicz?
input: receives viceral afferent autonomic activities. Afferents may come back into the NS via the anterior root.

output: pre-ganglionic parasympathetic cells

role: visceral motor