Muscle of Anterior Cervical Region (Extrinsic Muscle of Larynx)

Infrahyoid Muscle

Muscle: Thyrohyoid

Origin: Oblique line of thyroid cartilage

Insertion: Inferior border of body and greater horn of hyoid

Innervation: C₁ via hypoglossal nerve (CN XII)

Main Action(s): Depresses hyoid and elevates larynx