Mechanism of the Larynx. 351 



Had this section passed nearer to EF (Fig. 2) these ventricles would have 

 appeared somewhat deeper, and considerably higher at their inward extremities. 

 Fig. 5 is a similar section, having the vocal ligaments in another position, and 

 Fig. 6 an enlarged diagram of part of these sections, which is sufficiently ex- 

 plained in the text. 

 In Figs. 3, 4, 7, 8 the Larynx is represented as removed from the surrounding 

 parts, and stripped of the epiglottis and investing mucous membrane, leaving 

 the bare cartilages, muscles, and ligaments ; but still retaining in their pro- 

 per relative positions those parts which are left. 

 Fig. 3 is a section of the Larynx in this state, corresponding to Fig. 2 ; the cut 

 edges of the cartilages being therefore alike in these two figures. 



EmCG, the thyroid cartilage. G, its upper horn. C, the place of its lower, 



by which it is articulated to the cricoid. 

 AnBC, the cricoid cartilage. 

 F, the arytenoid cartilage. 

 EF, the vocal ligament. 



FB, the bundle of ligaments uniting the arytenoid to the point B of the cricoid. 

 Emea, the thyroarytenoideus muscle. 

 Xe, the cricoarytenoideus lateralis. 



s, the transverse section of the arytenoideus transversus. 

 BL, the projection of the axis of articulation of the arytenoid with the 



cricoid. 

 mn, the space between the thyroid and cricoid, which may be traced exter- 

 nally at DE (Fig. 2.) 

 Fig. 4, the external elevation of the half of the Larynx removed from Fig. 3. 



EmcH, the thyroid cartilage. H, its upper horn. C, its lower horn, arti- 

 culated to the cricoid. 

 AnBC, the cricoid cartilage. 

 AK, the cricothyroideus muscle. 

 Fig. 7. A bird's-eye view of the Larynx from above. 



GEH, the thyroid cartilage embracing the ring of the cricoid rttXw, 

 and capable of turning on the axis xz, which passes through the lower honi* 

 C, Figs. 3, 4. 



NF, NF, the arytenoid cartilages. 



TV, TV, the vocal ligaments. 



NX, the right cricoarytenoideus lateralis, the left is removed. 



