Lie w/in spinal cord above L1
Upper motor neuron’s
Lesions ➡️ spasticity & hyperreflexia below level of lesion
Lesions of upper motor neuron’s
Activate the muscle they innervate
Lower motor neuron
Lesions of lower motor neurons➡️
Weakness, paralysis, flaccidity
Number of vertebrae
33
Leading cause of death associated with spinal cord injuries
Respiratory (pneumonia, PE, or septicemia)
Used to be renal
Greatest risk SCI
16 to 30 y.o.
Male
Summer
EtOH/ drugs usually involved
1/2 cord is transected into north and south
Ipsilateral (same side) paralysis or paresis
Brown-Sequard syndrome