306 ANATOMICAL TECHNOLOGY. 



Chd. vc., Chorda vocalis. Vocal cord. 



Dien., Diencephalon. The abbreviation is written in the space between the two 

 thalami known as the diacoelia or " 3d ventricle." 



Oct. Stenon., Ductus Stenonianus Stenon's duct, Duct of the parotid gland (Fig. 

 87, 780). Its opening is hidden by the prominent cusp of the last praemolar, but a 

 bristle is represented as coming from it. 



Ductus Whartonianus Wharton's duct, Duct of the submaxillary gland ( 783). 

 The prominent papilla at the summit of which the duct opens is shown. 



Dura Dura mater. The dura is represented in this figure as a broad white line just 

 entad of the cranium and then prolonged into the neural canal as a sheath for the myelon. 

 It takes the place of the periosteum in the skull, but the neural canal is lined by a special 

 periosteum, so that the dura in the neural canal belongs exclusively to the myelon. 



Epen., Epencephalon, Cerebellum. See Fig. 117. 



Epglt., Epiglottis. The triangular flap which aids in the closure of the glottis dur- 

 ing deglutition. 



Ethtrb., Ethmoturbinale The ethmoturbinal bone (Fig. 59, 550). 



Falx, Falx cerebri, az. The fold of dura separating the olfactory lobes and part of 

 the mesal surface of the hemispheres of the right and left sides. In this figure it is 

 shaded with horizontal lines. 



Fraen., Fraenum linguae. The more or less plate-like cephalic part of the attachment 

 of the tongue to the floor of the mouth. 



Hy., Hypophysis cerebri, az. Pituitary body. See Chap. X. 



Inf., Infundibulum, az. The ventral prolongation of the diacoelia into the hypophysis. 



Larynx, az. The specialized cephalic part of the trachea, containing the vocal cords. 



Lingua, az. Tongue. 



Meatus ventralis. The ventral and more direct passage from the prsenaris through 

 the nasal chamber to the Postnaris or opening into the pharynx. 



Mcs., Medicommissura. Middle commissure (Fig. 117). 



Mesen., Mesencephalon. Optic lobes. 



Meten., Metencephalon, az. Medulla oblongata, 



Mxtrb., Maxilloturbinale. Maxilloturbinal bone (Fig. 59). 



Myelon, az. Spinal cord (Fig. 104). 



N. op., N. opticus. Optic nerve. 



CEs., CEsophagus, as. Gullet ( 801). 



O. boc., O. basioccipitale, az. (Fig. 59). 



O. bsph., O. basisphenoideum, az. (Fig. 59). 



O. praesph., O. praesphenoideum. az. (Fig. 59). 



O. hyoides (Fig. 30, 234). 



O. pit., O. palatinum (Fig. 59). 



O. mx., O. maxillare (Fig. 59). 



O. pmx., O. praemaxillare (Fig. 56). 



O. soc., O. supraoccipitale, az. (Fig. 59). 



O. ip., O. interparietale, az. (Fig. 59). 



O. parietale (Fig. 56). 



O. frontis (Fig. 56). 

 O. nasale (Fig. 56, 59). 



Papillae filiformes Filiform papillae ( 795) These are the fine projections from the 

 dorsal surface of the tongue. Caudally they become broad and ligulate (1-3 mm. long), 

 while in the middle of the cephalic part of the dorsal surface they are modified into the 

 form next described (Strieker, A, 356). 



