The sternohyoid is a muscle of the neck.
Anterior neck dissection including the sternohyoid
|Function:||Depression of the hyoid bone and larynx|
|Origin:||Posterior medial clavicle, posterior sternoclavicular ligament, posterior superior manubrium|
|Insertion:||Inferior surface of hyoid bone|
|Innervation:||Ansa cervicalis (C1 - C3)|
|Search for Sternohyoid in Gray's.|
The sternohyoid arises from the superoposterior border of the manubrium, the posterior sternoclavicular ligament, and the posterior surface of the medial clavicle. It travels superomedially to insert through short tendonous fibres into the inferior border of the hyoid bone. The muscles of the two sides are some distance apart at their origins, but come together in the midline half way along their lengths, and insert adjacently.
- Posterior border of the medial clavicle
- Posterior sternoclavicular ligament
- Superoposterior manubrium
- Inferior surface of hyoid bone
- Sometimes has a transverse tendon immediately above its origin joining the two parts
- May be doubled
- The clavicular origin may be a separate slip (the Cleidohyoid)
- May be absent