Somatic nervous system

Last revised by Craig Hacking on 19 Oct 2022

Citation, DOI, disclosures and article data

Citation:

Hacking C, Somatic nervous system. Reference article, Radiopaedia.org (Accessed on 25 Apr 2024) https://doi.org/10.53347/rID-154810

DOI:

https://doi.org/10.53347/rID-154810

Permalink:

https://radiopaedia.org/articles/154810

rID:

154810

Article created:

19 Oct 2022, Craig Hacking ◉ ◈

Disclosures:

At the time the article was created Craig Hacking had the following disclosures:

Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)

These were assessed during peer review and were determined to not be relevant to the changes that were made.

View Craig Hacking's current disclosures

Last revised:

19 Oct 2022, Craig Hacking ◉ ◈

Disclosures:

At the time the article was last revised Craig Hacking had the following disclosures:

Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)

These were assessed during peer review and were determined to not be relevant to the changes that were made.

View Craig Hacking's current disclosures

Revisions:

1 time, by 1 contributor - see full revision history and disclosures

Systems:

Central Nervous System, Musculoskeletal, Spine

Sections:

Anatomy

Synonyms:

somatosensory nervous system

The somatic nervous system (SNS) is a subdivision of the peripheral nervous system which provides innervation to the somatic structures of the body, that is the parts excluding the viscera, smooth muscle, and glands.

The SNS is distributed throughout the body through somatosensory neurones within spinal nerves that innervate specific sclerotomes, dermatomes and myotomes. These are defined embryological as arising from specifc somites.

The SNS includes:

sensory (afferent) fibres from sensory receptors for the sensation of touch, pain, temperature, and position (vestibular and proprioception)
motor (efferent) fibres to skeletal (voluntary) muscles