. Diseases of the nose and throat . Fig. 100.—The cricothyroid muscle, viewed anteriorly (Broca). A,Hyoid bone. B, Thyroid cartilage. C, Thyrohyoid membrane. D, Cricoidcartilage. E, Cricothyroid membrane. F, Trachea. 1, 1, Cricothyroidmuscle. 2, 2, Origin of the muscle from the anterior portion and side ofthe cricoid. 3, 3, Insertion into the lower border of the thyroid. (AfterBosworth.) ANATOMY. 331 It varies more in form than any other organ of the body, not evenexcluding the nose. It stands immediately above the thyroid, withits open face backward, and is attached by its pedicle or petiolus
. Diseases of the nose and throat . Fig. 100.—The cricothyroid muscle, viewed anteriorly (Broca). A,Hyoid bone. B, Thyroid cartilage. C, Thyrohyoid membrane. D, Cricoidcartilage. E, Cricothyroid membrane. F, Trachea. 1, 1, Cricothyroidmuscle. 2, 2, Origin of the muscle from the anterior portion and side ofthe cricoid. 3, 3, Insertion into the lower border of the thyroid. (AfterBosworth.) ANATOMY. 331 It varies more in form than any other organ of the body, not evenexcluding the nose. It stands immediately above the thyroid, withits open face backward, and is attached by its pedicle or petiolus tothe superior notch of the thyroid. As a rule, the epiglottis occupies more or less of a vertical posi-tion. The anterior surface is convex, or somewhat saddle-shaped fromside to side, and concave from above downward. These outlines varyin different cases, and in extreme cases may even be the reverse of theordinary rule. The posterior surface is slightly concave from side to. Fig. 100a. Fig. 1006. Fig. 100a.—The voice-box, or larynx, seen from behind. 1, 2, Ringcartilage. 3, 4, Pyramid muscle. 5 and 6, Shield. 7 and 8, and 12, Cartilages of Santorini. 10 and 13, Cartilages of Wrisberg. 11,14, 15, Lid. 16, Windpipe. 17, Cushion of the lid. 18 and 19, Back ring-pyramid muscles. 20, 21 and 22, 23, Constrictors of the vestibule. (AfterLennox Browne.) Fig. 1006.—View of the voice-box, or larynx, cut open from , 2, Ring cartilage. 3, 4, Pyramid muscle. 5 and 6, Vocal , 6, 7, 8, Entrances to the pockets. 7 and 8, Pocket ligaments. 9, 10,Cartilages of Santorini. 11 and 12, Cartilages of Wrisberg. 11, 12 and13, 14, Aryepiglottic folds. 15, Lid. 16, Windpipe. 17, Cushion of thelid. 18 and 19, Prop cartilages. (After Lennox Browne.) 21 332 DISEASES OF THE LARYNX. side, and in some instances deeply concave, like the long diameter ofthe half-section of a flattened tube. Between these two every varietyof formation may be found, the t
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