Thethyrohyoid muscle (m.thyrohyoideus) seems to be a continuation of the sternothyroid muscle from which it is separated by a tendinous intersection. It stretches from the oblique line of the thyroid cartilage to the body and greater horn of the hyoid bone.Action.Pulls the larynx upward when the hyoid bone is steadied. Innervation:C1-3 The omohyoid muscle (m.omohyoideus) is a long narrow muscle consisting of two bell is joined almost at a right angle by an intermediate tendon. The inferior belly arises medially of the scapular notch, overlaps the spatium antescalenum under cover of sternocleidomastoid muscle where it joins Medical Billing Training for the coding.