yawning

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Women yawning

Why Do We Yawn?

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Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

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Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

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yawning

behavior

Also known as: yawn

Learn about this topic in these articles:

resonation of the vocal organ

In speech: Intensity
…automatic reflexes of laughing and yawning illustrate the resonator action of the vocal organ. Together with a widely opened mouth, flat tongue, elevated palate, and maximally widened pharynx, the larynx assumes a lowered position with maximally elevated epiglottis. This configuration is ideal for the unimpeded radiation of the vocal cord…
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