40 OUTLINES OF ANATOMY. 



Thyroid cartilage: 

 Inferior cornua. 

 Cricoid cartilage, 940-1. (91920) 



Anterior and posterior portion. Superior and inferior border. 

 Posterior quadrate portion. 

 Anterior portion. 

 Inner surface. 

 Superior border. 

 Inferior border. 

 Arytenoid cartilages, 941. (920) 



Three surfaces. Three borders. 

 Base. Apex. Angles. 

 Surfaces: 



Posterior. Anterior. Internal. 

 Base. 

 Angles: 



Anterior. External, or muscular. Internal. 

 Borders: 



Internal. External. 

 Apex. 



Cornicula laryngis, or cartilages of Santorini, 942. (921) 

 Cuneiform cartilages, or cartilages of Wrisberg, 943. (921) 

 Calcification. Cartilage triticea. 

 Joints of the larynx, 944-5. (923) 

 Crico-thyroid joints. 

 Crico-arytenoid joints. 



Posterior crico-arytenoid ligament. 

 Crico-arytenoid ligament. 

 " Cricoid articular surface." 

 "The arytenoid." 

 Rotates. 

 Glides. 



A general examination should now be made of the specimen to be dissected, and the arrangement of 

 its parts studied, so far as is possible, without dissection. Fig. 507, P. 922 (901) shows the parts dis- 

 played by an examination of the upper extremity of the larynx, also Figs. 533-4. 



The epiglottis, 941-2. (920-1) 

 Glosso-epiglottidean folds. 

 Cushion of the epiglottis. 

 Aryteno-epiglottidean folds. 

 Pharyngo-epiglottidean fold. 

 The interior of the larynx, 947-8-9-50. (926-7-8-9) 



Superior aperture, or opening of the glottis. Sinus pyriforrnis. 

 Mucous membrane. 

 Suprarimal portion : 

 Ventricle. 

 Laryngeal pouch. 



(Compressor sacculi laryngis.) 

 Superior or false vocal cords. Fossa innominata. 

 Rima glottidis. 

 Infrarimal portion. 



Dissection of the Larynx. 



Sever the tongue from the hyoid bone. Remove the fibres of origin of the inferior constrictor. 

 Expose the thyro-hyoid membrane and ligaments and clean the superficial muscles of the larynx, 

 carefully preserving the laryngeal nerves and vessels. 



Thyro-hyoid membrane. Thyro-hyoid ligaments, 943. (922) 



Demonstrate the crico-thyroid muscles and < 

 between the muscles. 



Crico-thyroid, 945 ; Fig. 537. (924) 



Demonstrate the crico-thyroid muscles and expose the portion of the crico-thyroid membrane 

 between the muscles. 



