Where does this come from, and can I check it?

Laryngeal muscles adjust tension on vocal cords to alter voice pitch. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Vocal folds vibrate hundreds of times per second to create sound

Laryngeal muscles adjust tension on vocal cords to alter voice pitch

Located inside the larynx, vocal folds are twin bands of mucous membrane covering muscle tissue. Exhaled air passing between them causes rapid vibration, oscillating from 100 to over 1,000 times per second to produce sound waves modified by mouth shape.

Where this comes from

Encyclopaedia Britannica

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Tags: larynx, voice, speech

Vocal folds vibrate hundreds of times per second to create sound: the short answers

Where does this come from, and can I check it?: Laryngeal muscles adjust tension on vocal cords to alter voice pitch. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.