Life with health; a text-book on physiology, hygiene, and sanitation by Hurty John Newell 1853-1925
Author:Hurty, John Newell, 1853-1925. [from old catalog]
Language: eng
Format: epub
Tags: Physiology, Hygiene
Publisher: Chicago, R. K. Row & company
Published: 1906-03-25T05:00:00+00:00
LIFE WITH HEALTH
larynx from back to front. They are so arranged as to vibrate when air passes over them, and are attached on three sides, only one edge being free.
In stringed instruments, the strings are attached by the ends only, and in organs the reeds are fastened at one end, and have three edges to vibrate. It is almost beyond understanding how man with two cords can produce so many different sounds.
The muscles of the larynx are many and under perfect control. At will, they loosen or tighten and produce the various differences of sound which make up the human voice. Some muscles of the larynx rotate and move outwardly and some inwardly, some regulate the tension of the cords, or control respiration, or move the epiglottis.
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