Spinal Cord Tracts and Functions Flashcards
E
Lamina IX
(Motor neurons & interneurons)
L
Medial Longitudinal Fasciculus
C
Lamina VII: Clarke’s nucleus & Intermediolateral column
(Mostly autonomic processing)
E
Lateral Corticospinal Tract
C
Dorsolateral Tract of Lissauer
Anterior Corticospinal Tract
Uncrossed minority of pyramidal tract (mostly bilateral axial muscles)
Posterior Spinocerebellar Tract
Proprioception from Clarke’s nucleus
A
Gracile Tract
Lateral Corticospinal Tract
Primary descending motor control
D
Lamina VIII
(Motor neurons & interneurons)
K
Anterior Corticospinal Tract
Anterior Spinocerebellar Tract
Crossed proprioceptive and processed information. Goes to cerebellum through the superior cerebellar peduncle
Medial Reticulospinal Fibers
Pain modulation, visceromotor control, regulation of muscle tone
Lateral Vestibulospinal Fibers
Mediates balance and posture
A
Lamina II: Substantia gelantinosa
(Receives sensory inputs)
H
Spinothalamic Tract
J
Lateral Vestibulospinal Fibers
Dorsolateral Tract of Lissauer
Pain up/down a few segments
Cuneate Tract
Tactile from upper half of body
I
Medial Reticulospinal Fibers
B
Cuneate Tract
Gracile Tract
Tactile from lower half of body
Spinothalamic Tract
Pain, coarse touch, temp
B
Laminae III & IV: Nucleus proprius
(Receives sensory inputs)
MLF
Upper axial and head position
Receives propioceptive input, primarily from the leg
Clarke’s Nucleus
Contains sympathetic preganglionic neurons
Intermediolateral Cell Column (Lateral Horn)
