. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 261.—Dorsal and side views of larynx of opossum, Didelphys virginianus (Prince- ton 1739) cartilages dotted, a, arytenoid; c, cricoid; e, epiglottis; g, glottis; h, hyoid; t, trachea; th, thyreoid. membrane of the pharynx, the epiglottis, supported by an internal car- tilage (possibly the fourth branchial arch) which articulates with the anterior margin of the thyreoid. The epiglottis usually stands erect, leaving the glottis open for respiration, but during deglutition it folds back over the glottis, thus
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 261.—Dorsal and side views of larynx of opossum, Didelphys virginianus (Prince- ton 1739) cartilages dotted, a, arytenoid; c, cricoid; e, epiglottis; g, glottis; h, hyoid; t, trachea; th, thyreoid. membrane of the pharynx, the epiglottis, supported by an internal car- tilage (possibly the fourth branchial arch) which articulates with the anterior margin of the thyreoid. The epiglottis usually stands erect, leaving the glottis open for respiration, but during deglutition it folds back over the glottis, thus preventing the entrance of food into the trachea. Internally the cavity of the larynx bears a vocal cord on either side. These are folds of the mucous membrane, extending from the thyreoid to the arytenoids, and by movements of these latter cartilages they can be tightened or relaxed, thus altering the pitch of the note caused by their vibration. Anterior to these cords is a pocket, the laryngeal ventricle (sinus of Morgagni) on either side, small in most mammals, but developed in the anthropoid apes to large vocal sacs (in some there is a median vocal sac in addition), which act as resonators, adding to the strength of the 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 Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
