Sternohyoid muscle

The sternohyoid muscle is a muscle of the neck that connects the sternum to the hyoid bone in the throat. When contracted, it pulls the hyoid bone downward.

Origin
The sternohyoid muscle originates from the sternum, at the top of the lateral posterior aspect of the manubrium.

Insertion
The sternohyoid muscle inserts on the hyoid bone in the throat, on the inferior border.

Action
The sternohyoid depresses the hyoid bone, and the larynx along with it. This motion assists in speaking and swallowing.

Innervation
The sternohyoid is innervated by the ansa cervicalis nerve (C1, 2, 3).

Word origin
The sternohyoid gets its name from its two attachment points: the sternum and the hyoid.