Sacral nerves

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Nerve: Sacral nerves
Areas of distribution of the cutaneous branches of the posterior divisions of the spinal nerves. The areas of the medial branches are in black, those of the lateral in red. Sacral nerves are those labelled S1-S5.
Latin	nervi sacrales
Gray's	subject #209 924

The five sacral nerves emerge from the sacrum. Although the vertebral components of the sacrum are fused into a single bone, the sacral vertebrae are still used to number the sacral nerves.

• Posteriorly, they emerge from the posterior sacral foramina, and form the posterior branches of sacral nerves (including the medial clunial nerves).

• Anteriorly, they emerge from the anterior sacral foramina, and contribute to the sacral plexus (S1-S4) and coccygeal plexus.

[edit] See also

• Spinal nerve

[edit] External links

• Sacral+nerves at eMedicine Dictionary
• Anatomy at MUN nerve/sacnerv

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v • d • e Nerves: spinal nerves (TA A14.2, GA 9.916) Cervical (8) C1, C2, C3, C4, C5, C6, C7, C8 anterior (Cervical plexus, Brachial plexus) - posterior (Posterior branches of cervical nerves, Suboccipital - C1, Greater occipital - C2, Third occipital - C3) Thoracic (12) T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 anterior (Intercostal, Intercostobrachial - T2, Thoraco-abdominal nerves - T7-T11, Subcostal - T12) - posterior (Posterior branches of thoracic nerves) Lumbar (5) L1, L2, L3, L4, L5 anterior (Lumbar plexus, Lumbosacral trunk) · posterior (Posterior branches of the lumbar nerves, Superior cluneal L1-L3) Sacral (5) S1, S2, S3, S4, S5 anterior (Sacral plexus) · posterior (Posterior branches of sacral nerves, Medial cluneal nerves) Coccygeal (1) anterior (Coccygeal plexus) · posterior (Posterior branch of coccygeal nerve)

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