This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 Excerpt: ...The cartilages of the larynx are nine in number, viz.: Thyroid, Two arytenoid, Cricoid, Two cornicula laryngis, Epiglottis, Two cuneiform. The vocal cords are four ligamentous bands, extending across the larynx in an antero-posterior direction. The superior ones are called false vocal cords, because they are not ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 Excerpt: ...The cartilages of the larynx are nine in number, viz.: Thyroid, Two arytenoid, Cricoid, Two cornicula laryngis, Epiglottis, Two cuneiform. The vocal cords are four ligamentous bands, extending across the larynx in an antero-posterior direction. The superior ones are called false vocal cords, because they are not directly concerned in the production of the voice. The true vocal cords are situated below the false ones; in between the true and false cords is a narrow fissure or chink, called the rima glottidis. Voice. Voice is produced by vibration of the true vocal cords, normally brought about by an expiratory blast of air passing between them while they are approximated and held in a state of tension by muscular action. The vocal cords are attached to the movable cartilages of the larynx; the muscles acting upon the cartilages can make the cords tense or lax. When the vocal cords are relaxed, nothing is heard except a faint whisper when air passes through the cavity of the larynx. When the vocal sound is to be produced, however, the cords are made tense, and are applied Fig. 58.--Longitudinal section of tha human larynx, showing the vocal chords. I, ventricle of the larynx; 2, superior vocal chord; 3, inferior vocal chord; 4, arytenoid muscle; 6, 6, inferior portion of the cavity of the larynx; 7, section of the posterior portion of the cricoid cartilage; 8, section of the anterior portion of the cricoid cartilage; 10, section of the thyroid cartilage; II, n, superior portion of the cavity of the larynx; 12, 13, arytenoid gland; 14, 16, epiglottis; 15, 17, adipose tissue; 18, section of the hyoid gland; 19, 19, 20, trachea. closely to each other, thus diminishing considerably the diameter of the orifice; and the air, driven by forcible expiration through th...
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Add this copy of Text-Book of Anatomy, Physiology and Hygiene to cart. $58.41, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.