. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. NORMAL ANATOMY OF THE LARYNX. 100 LARYNX. *£(; (clamo); Fr. Larynx; Germ. KehlkopJ ; Ital. Laringe.—The larynx is a complex piece of mechanism resembling a kind of box, (piris cava,) composed of an assemblage of carti- lages, the density and elasticity of which serve to protect its more delicate tissues, and to allow the free transmission of air for respira- tion. It is also exquisitely adapted for the production of voice. The larynx is situated in the mesial line, and opens superiorly into the pharynx, and infe
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. NORMAL ANATOMY OF THE LARYNX. 100 LARYNX. *£(; (clamo); Fr. Larynx; Germ. KehlkopJ ; Ital. Laringe.—The larynx is a complex piece of mechanism resembling a kind of box, (piris cava,) composed of an assemblage of carti- lages, the density and elasticity of which serve to protect its more delicate tissues, and to allow the free transmission of air for respira- tion. It is also exquisitely adapted for the production of voice. The larynx is situated in the mesial line, and opens superiorly into the pharynx, and inferiorly into the trachea. It occupies the anterior superior part of the neck, immediately below the os hyoides, and before the pharynx, which lies between it and the vertebral column. In front it is very superficial, being covered only by the sub-hyoidean muscles, and the common integuments. It admits of various kinds of motion: 1, those of elevation and depression parallel to the long axis of the body; 2, those complex movements within it which take place during respiration and the production of vocal sounds. The larynx considered with reference to the trachea, presents an enlargement denominated Fig. 18. the cnput asperse asteria, or the head of the trachea. The absolute volume of the larynx varies with the age and sex of the individual: its magnitude is much more considerable in men than in women ; in the former it acquires an extraordinary developement at the age of puberty. In eunuchs, however, this enlarge- ment does not take place. The larynx does not represent any regular geometrical figure; it may be denned as an irregular, inverted, truncated cone, whose sec- tions at the apex and base are elliptical, but approaching nearly to a circle at its junction with the trachea. This organ is perfectly symmetrical, which, however, applies to one of its sections only, viz. that of its mesial plane, or axis major; consequently, all the others must be unsym- metrical: the secti
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