Plica vocalis refers to a fold of mucous membrane that is located in the larynx of mammals. This important structure helps to vibrate the vocal cords, which allows us to speak and make other sounds. There are many synonyms for plica vocalis, including vocal fold, vocal ligament, and false vocal cord. While these terms all refer to the same structure, they may be used in different contexts depending on the specific medical or scientific field. It's important to understand the different names for plica vocalis in order to accurately communicate about the workings of the larynx and voice production.