The thyroid cartilage is the large shield-like cartilage forming much of the anterior and lateral framework of the larynx. Its two broad plates meet at the front, and its connections provide support and attachment for tissues involved in airway protection and voice production.[ref]
Anatomy and Physiology 2e by J. Gordon Betts and others. Section 22.1, Larynx and laryngeal cartilages
Movement at its relationship with the cricoid cartilage helps alter vocal-fold tension. Changing tension changes the mechanical conditions for oscillation, while airflow supplies energy. The cartilage is distinct from the nearby thyroid gland: sharing the word “thyroid” does not make the laryngeal supporting structure a hormone-secreting gland.
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