glottis
triangular opening between vocal cords
The glottis is a part of the human respiratory system and is located in the larynx or voice box. It is essentially the opening between the vocal cords that allows for the passage of air between the lungs and the outside environment during breathing. The glottis plays an important role in vocalization, helping to control the production of sound and the pitch of the voice. The size of the glottis can also be adjusted to allow for the passage of different volumes of air, which affects the loudness of speech or singing. During swallowing, the glottis closes to protect the airway and prevent food or liquid from entering the lungs. Dysfunction or disorders of the glottis can cause problems with breathing, speaking, or swallowing, and may require medical intervention or speech therapy.
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