The sternohyoid and omohyoid muscles make up the superficial, or top, layer of the infrahyoid muscle group. The sternothyroid attaches to the upper portion of the sternum, ...

The hypoglossal nerve also innervates the thyrohyoid, omohyoid, sternohyoid, and sternothyroid muscles, which control the mandible (lower jaw) and the hyoid bones while speaking and swallowing.

There was extensive extrathyroidal extension of the papillary thyroid carcinoma from the left lobe into the strap muscle, the sternohyoid muscle. Five of 26 nodes in the level VI ...