Innervation
Plate304
AutonomicReflexPathways:Schema
Sympathetic trunk
Dorsal (posterior) root
Thoracic part
of spinal cord
Intermediolateral
cell column
Dorsal
root
(spinal)
ganglion
Ganglion of
sympathetic trunk
Spinal nerve to muscles,
joints, vessels, and
glands of skin
White ramus communicans
Gray ramus communicans
Ganglion of
sympathetic trunk
Ventral (anterior) root
Meningeal branch to spinal
meninges and spinal perivascular
plexuses (usually arises from
spinal nerve)
Stretch
(distention)
Greater, lesser, and
least splanchnic
nerves
Pain
Vagus
nerve (X)
Ganglion of
sympathetic trunk
Celiac
ganglion
Enteric
plexuses
of gut
Superior
mesenteric
ganglion
Sympathetic
fibers
Preganglionic
Parasympathetic
fibers
Afferent fibers
Postganglionic
Preganglionic
Postganglionic
