. Elements of human physiology. Physiology. 432 PHYSIOLOGY When a {ah) is sounded, the mouth-cavity assumes a wide conical form, the widest part of the cone being at the mouth. With e {eh) and i {ee) the cavity assumes the form of a flask with a long narrow neck which is formed by the raising of the tongue, leaving a narrow canal between this organ and the hard palate. These changes can be observed roughly by any one on himself if he intones oo, and then gradually changes the sound to 0, ah, e, i, directing close attention to the changes that he is making in his mouth. The vowel sounds, we may
. Elements of human physiology. Physiology. 432 PHYSIOLOGY When a {ah) is sounded, the mouth-cavity assumes a wide conical form, the widest part of the cone being at the mouth. With e {eh) and i {ee) the cavity assumes the form of a flask with a long narrow neck which is formed by the raising of the tongue, leaving a narrow canal between this organ and the hard palate. These changes can be observed roughly by any one on himself if he intones oo, and then gradually changes the sound to 0, ah, e, i, directing close attention to the changes that he is making in his mouth. The vowel sounds, we may conclude, are brought about by variations in the shape of the cavity of the mouth and pharynx, which alter the quality of the tone produced in the larynx Fi«. A (ah) U (oo) I (ce) Shape of the oral cavity in the production of the vowel sounds, A, U, 1 (Griitzner). by intensifying some and suppressing other harmonics or overtones. Diphthongs are produced by changing the form of the mouth-cavity from that of one vowel-sound to the other, so that one sound follows directly after the other ; thus ai = ah-ee run together and abbreviated. Consonants are sounds produced by a sudden check being placed in the course of the expiratory blast of air by closure of some part of the pharynx or mouth. They are classified into labials, dentals, or gutturals, according as the check takes place at the lips, between teeth and tongue, or between back of tongue and soft palate. In the production of nasal sounds, such as m, n, or ng,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Starling, Ernest Henry, 1866-1927. Chicago : W. T. Keener
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