Exam (elaborations) N243 Spinal Cord Injury

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N243 Spinal
Cord Injury


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N243 Spinal Cord Injury
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Nervous System Etiology Neurogenic Shock: result of loss
•

Review of ANS function below level of
injury
Central Peripheral Nervous and skeletal muscle
System
Nervous 2)Autonomic nervous system connecting to
System 12 cranial nerves visceral organs
arising from the
brain
Brain
1) Somatic fiber
connecting to skin
and skeletal muscles
31 pairs of spinal
Spinal nerves arising from
cord the spinal cord
1)Somatic fiber
connecting to skin
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H h warm extremities
o
Loss of sympathetic nervous system
b
o
y innervation (thoracic and lumbar)
p r
o Venous pooling and peripheral vasodilation
o a o Patient does not perspire in in affected
t d portions
e y o Associated with cervical or
n c high thoracic injuries; T6
s a or higher
▪ High risk for patients who suffer T6
i r
of higher injury;
o d
innervation of ANS at
n i
this level
a o Vasopressors given as treatment
a
n w
d i
t
Upper motor neurons (UMN)
CNS o
• Ascending Tracts (Sensory) ▪ Begin in the cerebral

o Carry sensory information from • Descending Tracts (Motor) cortex and project
receptors in the skin, muscle, o Carry signals that are downward
Lower motor neurons (LMN)
joints, viscera, and blood responsible for voluntary
o

▪ Influence skeletal muscles of
vessels to higher levels of the muscle movement
the arms, trunk, and legs; are
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