Sympathetic Pathway to
Body Wall & Limbs
Body Wall & Limbs
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Origin: thoraco-lumbar segments (T1-L4)
ORIGIN (click to reveal)
Preganglionic Pathway:
ventral root, spinal nerve, ramus communicans,
ventral root, spinal nerve, ramus communicans,
Preganglionic Pathway
sympathetic trunk,
Preganglionic Pathway
Ganglion: sympathetic trunk ganglia (paravertebral ganglia)
Autonomic GANGLION (Synapse)
Postganglionic Pathway:
rami communicantes to spinal nerves,
rami communicantes to spinal nerves,
Postganglionic Pathway
dorsal or ventral primary branches of spinal nerves.
Postganglionic Pathway
Target Organs:
arrector pili smooth muscle (piloerection);
sweat glands;
blood vessel smooth muscle
arrector pili smooth muscle (piloerection);
sweat glands;
blood vessel smooth muscle
TARGET ORGANS
(click to reveal)
(click to reveal)
Pathway Image
(click to reveal)
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