Anatomy and Physiology of the Larynx. 89 



Fig. 5. — diagram of a transverse section op the larynx of a 

 medium-sized horse, through the thyroid, cricoid, and 

 arytenoid cartilages and ventricles, immediately above 

 the vocal cords, vs^ith the measurements op these parts. 



A, Front of larynx, or Pomum Adami of thyroid cartilage. B, 

 Posterior part of larynx. C, Pars vocales. D, Pars respiratoria. 1, 

 Thyroid cartilage. 2, 3, Left and right arytaenoid cartilages. 4, Bezel 

 of cricoid cartilage. 5' 6, Vocal cords — each Ij to If inch long, by 

 \ inch at widest part. 6 6, Morgagni's ventricles — from dotted line 

 1 inch long by ^ inch wide. 7 7, Insertion of vocal cords into ary- 

 taenoid cartilages. 8, Width of glottis between the latter points finch. 

 9, Width between the arytsenoid cartilages at their posterior part 

 f inch. 10 10, Length of each arytasnoid cartilage 1^ inch, thickness 

 -j^ inch. 1111, Entire length of glottis 3f inches. 12, Length (trans- 

 verse) of cricoid cartilage 2 inches, thickness <l-^. 13, Length of thyroid 

 cartilage each side 4^, thickness ^ inch. 14 14, Distance between each 

 wing of the thyroid cartilage 3 inches. 15, Mucous membrane lining 

 the cricoid cartilage. 16 16 16 16, Muscles and connective tissue; 



