68 SPECIAL ANATOMY. 



2. Anterior, by the tuber maxillar. sup. 



3. Internal, by the ala extern, proc. pterygoid. 



4. External, by the ram. maxillaris inferior. 



5. Posterior and inferior walls are deficient. 



On either side, in the depth between die Superior maxillary, pars perpen- 

 dicular, of the palate and proc. pterygoideus of the Sphenoid bone, belonging 

 to the above described fossa, is situated, the 



72. Fossa Spheno-maxillaris s. ptery go-palatina, 



the Ptery go-palatine fossa. 



Position: behind the Orbital, beneath the Cranial, above the 

 Buccal, close to the Nasal cavities ; internal to the fossa zygo- 

 matica. Contains : arteria maxillaris interna, and the 2d division 

 of the 5th nerve, and MeckeVs Ganglion. Five foramina lead to 

 this fossa; 



a. Above and behind : foram. rotunda Vidianum, pterygo-palatinum ; 



b. Internally ; foram. spheno-palatinum , 



c. Below ; the superior opening of the Can. palatin. post. 



Connection with: the orbit, byfasur. orb. infer.; the nose, by 

 for. spheno-palat.; the mouth, by canal, ptery go-palat. and pala- 

 tini; the cranial cavity, by foram. rotund, and Vidianum. 



73. Facial angle. 



Angulus facialis Campcri is formed, by drawing a perpendicular line from 

 the inferior Incisor teeth, in the middle line, to the most prominent portion 

 of the Frontal bone, and an oblique from the same place to the external 

 auditory meatus. It measures in Europeans 80 to 85, in Negroes 70. The 

 more pointed the angle proves, so much the more the animal conformation 

 preponderates. 



74. Vertebral column, back-bone, columna, s. spina verte- 



brarum s. rachis. 



Extends from close beneath the cranium as low down as the 

 os coccyx which forms its inferior extremity ; contributes to form 

 the Thoracic, Ventral, and Pelvic cavities ; is gently curved, of an 

 undulating figure, and contains an osseous canal, for the spinal 

 marrow. 



Constituent parts : a. True vertebrae, 24 ; Cervical portion, 7 ; 

 Thoracic or Dorsal, 12; Abdominal or Lumbar, 5. 



b. Sacrum, 5 false vertebrae blended together. 



c. Coccygis, 4 false vertebrae blended together. These two 

 together form the Pelvic portion. 



75. 1. True vertebrae, vertebras veras. 



7 Cervical vertebrae, v. cervicales ; 12 Thoracic or Dorsal, v. 

 dor sales; 5 Ventral or Lumbar, v. lumbales. 



