You'll often see it used in medical terms like:
* Laryngitis: Inflammation of the larynx
* Laryngoscopy: Examination of the larynx using a laryngoscope
* Laryngectomy: Surgical removal of the larynx
* Laryngeal: Relating to the larynx
So, anytime you see "laryngo" in a word, it's referring to the larynx.