Peripheral Nervous System and Spinal Cord (Part 2)

begin at thoracic and upper lumbar (T1-L2) levels of the spinal cord (thoracolumbar)

location of sympathetic innervation pathways

begin in the brain and in sacral levels of the spinal cord (S2)S3-S4(S5)= craniosacral

location of parasympathetic innervation pathways

involved in the expenditure of energy ("fight or flight")

sympathetic innervation

generally involved in energy uptake ("rest and digest")

parasympathetic innervation

TWO

Autonomic innervation (sympathetic and parasympathetic) are ______ neuron pathways

the CNS

the cell body of a preganglionic neuron is in...

a ganglion outside the CNS

the cell body of a postganglionic neuron is in...

myelinated

the fibers of a preganglionic neuron are

NOT myelinated

the fibers of a postganglionic neuron are

intermediolateral (IML) column aka "lateral horn"

preganglionic sympathetic cell bodies are located in the ____________

T1-L2 (thoracolumbar)

preganglionic sympathetic cell bodies are located in the gray matter of spinal cord levels...

postganglionic sympathetic cell bodies heading towards the structures in the body wall and thoracic viscera are located in the

Sympathetic chain ganglia (aka sympathetic trunk ganglia or paravertebral ganglia)

postganglionic sympathetic cell bodies heading towards the abdominal viscera are located in the

Sub-diaphragmatic ganglia (aka prevertebral ganglia)

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