Anatomy and Physiology of the Larynx. 75 



2. Cricoid Cartilage (Cartilago cricoidea), Figs. 1, e ; 

 2,dd; S,e c^.— Next in size to the foregoing, this cartilage 

 forms a complete ring, like a finger-ring with a very wide 

 bezel, the narrow portion being in front and around the 



Fig. 2.— posterior view of the larynx. 



a a, Arytsenoid muscle — constrictor or adductor of the larynx ; 6 h, 

 Posterior crico-aryttBuoid muscles — dilators or abductors of the larynx ; 

 c c, Santorini's cartilages, appendages of the arytsenoid cartilages ; d^d, 

 Posterior borders of the thyroid cartilage ; e e, Epiglottis ; /, Entrance 

 to the larynx ; g g, Processi musculares of the arytasnoid cartilages. 



sides, below the thyroid cartilage, and next to the first ring 

 of the trachea ; the widely-expanded portion filling up the 

 space between the wings of the latter behind, and com- 

 pleting the laryngeal box. On the back, in the middle of 



