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| Nerve: Splanchnic nerves | |
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| Nerves of the autonomic nervous system, with splanchnic nerves seen in center. | |
| Dorlands / Elsevier |
n_04/12564652 |
The splanchnic nerves are paired nerves that contribute to the innervation of the viscera, carrying fibers of the autonomic nervous system (visceral efferent fibers) as well as sensory fibers from the organs (which are also known as visceral afferent fibers). All carry sympathetic fibers except for the pelvic splanchnic nerves, which carry parasympathetic fibers.
Types
Specifically, the term "splanchnic nerves" can refer to:
- Cardiopulmonary nerves[1]
- Thoracic splanchnic nerves (greater, lesser, and least)
- Lumbar splanchnic nerves
- Sacral splanchnic nerves
- Pelvic splanchnic nerves
| Nerve | Pre-/postsynaptic [2] | autonomic system[2] | Origin[2] | Targets[2] | |
|---|---|---|---|---|---|
| Cardiopulmonary nerves | Postsynaptic | sympathetic | cervical and upper thoracic ganglia | Thoracic cavity | |
| Thoracic splanchnic nerves | generally | Presynaptic | lower thoracic ganglia | Prevertebral ganglia | |
| Greater splanchnic nerve | T5-T9 or T10 | Celiac ganglia | |||
| Lesser splanchnic nerve | T10-T11 | Aorticorenal ganglia | |||
| Least splanchnic nerve | T12 | Superior mesenteric ganglia | |||
| Lumbar splanchnic nerves | lumbar ganglia | Inferior mesenteric ganglia, ganglia of intermesenteric and hypogastric plexuses | |||
| Sacral splanchnic nerves | |||||
| Pelvic splanchnic nerves | parasympathetic | sacral ganglia (S2-S4) | intramural ganglia of descending and sigmoid colon, rectum and pelvic viscera | ||
References
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- This page was last modified on 13 April 2008, at 14:11.
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