Sympathetic Pathway to
Abdominal Viscera
Abdominal Viscera
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Origin: caudal thoracic & cranial lumbar segments (T7-L2)
ORIGIN (click to reveal)
Preganglionic Pathway:
ventral root, spinal nerve, ramus communicans,
ventral root, spinal nerve, ramus communicans,
Preganglionic Pathway
sympathetic trunk,
Preganglionic Pathway
major, minor, & lumbar splanchnic nerves
Preganglionic Pathway
Ganglion: prevertebral ganglia within plexuses (i.e., celiac, cranial & caudal mesenteric, gonadal, and renal ganglia); adrenal medulla
Autonomic GANGLION (Synapse)
Postganglionic Pathway:
nerve plexuses on abdominal arteries, e.g., celiac, hepatic,
nerve plexuses on abdominal arteries, e.g., celiac, hepatic,
Postganglionic Pathway
cranial mesenteric, middle colic, renal, etc. nerve plexuses
Postganglionic Pathway
Target Organs:
alimentary tract smooth muscle and glands;
liver; pancreas;
blood vessel smooth muscle
alimentary tract smooth muscle and glands;
liver; pancreas;
blood vessel smooth muscle
TARGET ORGANS
(click to reveal)
(click to reveal)
Pathway Image
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