Sacral ganglia

The sacral ganglia are paravertebral ganglia of the sympathetic trunk.[1]:39 As the sympathetic trunk heads inferiorly down the sacrum, it turns medially. There are generally four or five sacral ganglia. In addition to gray rami communicantes, the ganglia send off sacral splanchnic nerves to join the inferior hypogastric plexus.

Sacral ganglia
Tosacral splanchnic nerves
Latinganglia sacralia
Anatomical terms of neuroanatomy

Recurrences of genital herpes are caused by herpes simplex virus which lies dormant in the sacral ganglia between bouts of active infection.[2]

It innervates blood vessels and sweat glands in lower limbs.

Near the coccyx, the right and left sympathetic trunks join to form the ganglion impar.


  1. Moore, Keith L. Moore, Anne M.R. Agur; in collaboration with and with content provided by Arthur F. Dalley II; with the expertise of medical illustrator Valerie Oxorn and the developmental assistance of Marion E. (2007). Essential clinical anatomy (3rd ed.). Baltimore, MD: Lippincott Williams & Wilkins. ISBN 0-7817-6274-X.
  2. "VIROLOGY - CHAPTER ELEVEN HERPES VIRUSES". Microbiology and Immunology Online. University of South Carolina School of Medicine. Retrieved 10 April 2012.

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