260 



HITCHCOCK'S ANATOMY 



two Cuneiform (wedge-shaped), one Cricoid (ring-like), one 

 Thyroid (shield-like,) and one Epiglottis (cover to the Glottis). 

 These together form the small prominent portion of the neck 

 known as Adam's apple. 



460. Thyroid Cartilage— Arytenoid Cartilages —Cu- 

 neiform Cartilages —Cricoid Cartilage— Vocal Cords — 

 Ventricle of the Larynx —Muscles of the Larynx— The 

 Thyroid Cartilage is so arranged as to form a framework for 

 the movable portions of the organs of the voice, and this is 

 the principal cartilage that forms the Adam's apple. The 

 Arytenoid Cartilages can be moved by the small muscles of 



Fig. 256. 



A Front View of the Thyroid Carti- 

 lage 1, Left Half of the Cartilage. 2, 

 Anterior projecting Angle. 3, Superior 

 Margin. 4, Its Notch. 5, Inferior Margin. 

 G, G, Cornua Majora. 7, 7, Cornua Minora. 



Tig. 257. 



2 



A Posterior View of the Left Arytenoid 

 Cartilage.- 1, Its Posterior Face. 2, The 

 Summit. 3, The Base and Cavity for 

 Articulating with the Cricoid Cartilage. 

 4, Its External Angle. 5, Its Internal 

 Angle. 



the larynx. The object of this movement is to relax or 

 tighten the vocal cords, so that the different pitch and quality 

 of voice may be perfected. The Cuneiform Cartilages are 

 about half an inch in length, and enlarged at each extremity. 

 These are sometimes wanting. The Cricoid Cartilage is of a 

 ring-like appearance, and resting directly upon the rings of 



459. "What is the essential organ of voice in all animals? Give the anatomy of the 

 larynx. Name the seven cartilages. 460. Describe the thyroid and a ytenoid cartilages. 

 "Describe the cuneiform and cricoid cartilages. 



