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speech (language) :: Extrinsic muscles -- Britannica Online Encyclopedia
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speech

Extrinsic muscles

Although it is situated outside the laryngeal cartilages, the short cricothyroid muscle, a triangular muscle between the respective two cartilages, is traditionally discussed among the intrinsic (internal) muscles. Whenever this muscle contracts, the cricoid and thyroid cartilages are brought together anteriorly. This moves the anterior (forward) insertion of the vocal cords inside the thyroid wing forward, while their posterior (backward) insertion on the arytenoid cartilages is shifted backward. From this rotation results a marked elongation of the vocal folds clearly visible on X-ray films. This stretching action is the chief mechanism for raising the pitch of the sound ... (100 of 8435 words)

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Speech - Children's Encyclopedia (Ages 8-11)

Speech, or talking, is the form of language that people can hear. (Writing is the other main form of language.) People use speech to communicate with others.

speech - Student Encyclopedia (Ages 11 and up)

The ability to express and communicate thoughts, emotions, and abstract ideas by spoken words-speech-is one of the features that distinguishes humans from other animals. Speech is the spoken form of language, the system of symbols by which humans communicate (see Language).

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