Trunk Postural Adjustments
Neck Postural Adjustments
Controls eye movements
The STNR presents in typcial development until about 8-11 months of post-natal life
The STNR is a type of spinal cord reflex
The STNR is a precusor to crawling
In the STNR if the head is flexed, the arms flex and legs extend.
In the STNR if the head is extended, the arms extend & legs flex
This polysynaptic reflex starts with the lengthening of a muscle.
The lengthening of the muscle causes the Ia and II sensory axons to fire.
This ultimately results in the inhibition of the antagonist.
The Ia excites motor neurons (Gamma) to the same muscle, causing a contraction that opposes lengthening
Anterior (ventral) Corticospinal
C & D
The Dorsal Column Medial Lemniscus
The Lateral Corticospinal
A & D
Paralysis in his left lower extremeties
Paralysis in his right lower extremeties
Loss of pain and temperature sensation on his left side below the lesion
Loss of discriminative touch on his left side below the lesion
Loss of discriminative touch on his right side below the lesion
They travel through the anterior funiculus.
Their function includes limb flexion and fine movements
Includes the Lateral and Anterior Corticospinal Tracts
Terminates at the Anterior Funiculus
Affects mostly Extensor muslces
Damage to Lower Motor Neurons that occured in gestation
A hemisection spinal cord lesion caused by a genetic mutation
Bilateral symmetric malformation or swelling in the motor cortex
Loss of Dopamine in the Basal Ganglia
Dorsal Root Ganglion
It does not exit the spinal cord