Function. The action of the sternohyoid muscle is to depress the hyoid bone after it has been elevated by the suprahyoid muscles. The elevation of the hyoid bone and thus the larynx, happens during swallowing.

What is the function of the Sternohyoid?

This group of muscles contains four main muscles: the omohyoid muscle, the sternohyoid muscle, the sternothyroid muscle, and the thyrohyoid muscle. The primary function of this group of muscles is to depress the hyoid bone during speech and swallowing.

What is the action of the Sternothyroid muscle?

Action. The sternothyroid muscles primarily depress and fix the hyoid bone and underlying larynx.