Anatomy and Physiology of the Larynx. 75 



2. Cricoid Cartilage (Oartilago cricoidea), Yigs. 1, e; 

 2, d d ; 3, e d. — 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.^posterioe view of the larynx. 



a a, Arytsenoid muscle — constrictor or adductor of tlje larynx ; 5 ft, 

 Posterior crioo-arytsenoid 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 arytsenoid 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 



