Ansa cervicalis

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Nerve: Ansa cervicalis
Ansa cervicalis. Superior root labeled as "descending hypoglossal", Inferior root labeled as "descending cervical".
Gray's subject #210 928
Innervates    sternohyoid muscle, sternothyroid muscle, omohyoid muscle
/ Elsevier

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

The ansa cervicalis (or ansa hypoglossi in older literature) is a loop of nerves that are part of the cervical plexus.

Branches from the ansa cervicalis innervate all but one of the infrahyoid muscles, including the sternohyoid muscle, the sternothyroid muscle, and the omohyoid muscle. The thyrohyoid muscle is innervated by C1 only.


Two roots make up the ansa cervicalis.

Additional Images


  • "Ansa cervicalis." Stedman's Medical Dictionary, 27th ed. (2000). ISBN 0-683-40007-X
  • Gray's Anatomy: The Anatomical Basis of Clinical Practice. (2005). ISBN 0-443-07168-3

External links

de:Ansa cervicalis profunda