In the abdomen and pelvis, the autonomic innervation comes from several sources:
- Sympathetic innervation
- T5-L3 spinal segments
- Thoracic splanchnic nerves — Greater, lesser, and least splanchnic nerves
- Lumbar splanchnic nerves
- Parasympathetic innervation
- Vagus nerve (CN X)
- Pelvic splanchnic nerves
Autonomic ganglia
- Celiac ganglion
- Aorticorenal ganglion
- Superior mesenteric ganglion
- Inferior mesenteric ganglion
- Superior hypogastric ganglion
- Inferior hypogastric ganglion
The ganglia are named after their location. Most of these correspond to the arteries nearby, and they are carried by their branches to the organs,