Spinal Cord Tracts Flashcards
Lateral Cortical Spinal Tract
Primary motor cortex + supplementary motor area + frontal area ==> Spinal cord gray matter
*** CROSS IN MEDULLA
Function: Voluntary motor function
Medial Cortex Spinal Tract
Primary motor cortex + supplementary motor area + frontal area ==> bilaterally in ventromedial gray matter of spinal cord
Function: control cervical/shoulder/trunk muscles
Rubrospinal tract
Red nucleus of mid brain/cerebllum ==> ventromedial gray matter of spinal tract
** cross in midbrain
Function: postural; upper limb distal extensors
Lateral Reticular spinal tract
Reticular formation in MEDULLA ==> ventromedial gray matter
Function: inhibits extensors and and allows for limb flexors
Medial reticular spinal tract
Reticular formation in PONS ==> ventromedial gray matter
Function: Posture muscles and limb extensors
Lateral Vestibuospinal tract
Lateral vestibular nucleus ==> ventral and immediate gray matter
Function: Facilitate extensors and limit flexors for balancer actions
Medial vestibuospinal tract
Medial vestibular nucleus ==> ventral and immediate gray matter
Function: neck and upper musculature
Tectospinal Tract
Superior collides in midbrain ==> ventromedial gray of cervical spinal
Function: turn head toward auditory and visual stimuli
Dorsal Column
Peripheral receptors ==> medulla ==> thalamus (Crossess) ==> Cerebral cortex
Function: light touch, conscious proprioception, and discriminative touch
Brown Squared Syndrome
Ipsilateral loss of motor, vibration, proprioception and two point discrimination
Contralateral pain and temperature control
Posterior Cord Syndrome
Bilateral loss of tactile discrimination, vibration, pressure, and proprioception
** Motor function persevered
Central Cord Syndrome
Greater UE impairment than LE involvement
Anterior Cord Syndrome
Bilateral loss of motor function and pain/temperature sensation
Preservation of light touch, proprioception and vibration
