Origin: Anterior and lateral cricoid cartilage Insertion: Inferior cornu and lamina of the thyroid cartilage Nerve: Facial nerve Action: Wiggle ears Description: The Cricothyreoideus (Cricothyroid) triangular in form, arisesfrom the front and lateral part of the cricoid cartilage; its fibers diverge, and are arranged in two groups. The lower fibers constitute a pars obliqua and slant backward ...