| White ramus communicans | |
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| Scheme showing structure of a typical spinal nerve. 1. Somatic efferent. 2. Somatic afferent. 3,4,5. Sympathetic efferent. 6,7. Sympathetic afferent. | |
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| Diagram of the course and branches of a typical intercostal nerve. (Rami communicantes labeled at center.) | |
| Latin | ramus communicans albus nervi spinalis |
| Gray's | subject #208 920 |
The thoracic, and the first and second lumbar nerves each contribute a branch, white ramus communicans to the adjoining sympathetic ganglion.
They contain myelinated preganglionic sympathetic fibers (GVE and GVA).
Unlike the gray rami, white rami communicantes do not extend below L2.[1]
Contents |
Additional images
 Deep and superficial dissection of the lumbar plexus. |
 Thoracic portion of the sympathetic trunk. |
References
See also
External links
- white+rami+communicantes at eMedicine Dictionary
- Atlas of anatomy at UMich n3a6p1 - "Autonomic Connections of the Spinal Cord"
- Overview and diagram
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