94 



SPECIAL ANATOMY. 



Development. Two osseous nuclei, a. in the centre piece, at 

 the end of the third foetal month; b. in the posterior end, ext. 

 halluc. The second phalanx ossifies last. At birth the apex of 

 the ungual phalanx is ossified. 



109. 



Characteristics 



of the Male and 



Bones: stronger, larger, heavier, and 

 more rough. 



Head and extremities preponderating 

 over the trunk. 



Thorax: more elevated: anterior flat- 

 tened ; dorsal vertebrae higher ; the 

 ribs passing more obliquely down- 

 wards. 



Sternum: longer and flatter. 



Clavicles : more strongly curved, long- 

 er, inclined outwards; the angle 

 with the sternum obtuse. 



Abdominal vertebra: shorter; and 

 therefore the space, ventral cavity, 

 between them and the chest is 

 likewise shorter. 



Pelvis: narrower, higher. Promon- 

 torium more pointed. Crista lliaca 

 more sigmoidal and curved. Jlrcus 

 pubis, angular. The acetabula 

 closer to the axis of the body, 

 therefore the gait less rolling. 



Sacrum : narrower ; Coccyx broader. 



Extremities: longer, the inferior less 

 converging. 



Cranial and facial cavities, with ex- 

 ception of orbits, larger. 

 Canalis spinalis, narrower. 



of the Female Skeleton. 



Shorter, thinner, lighter, and more 

 smooth. 



Trunk relatively larger than head 

 and extremities. 



Chest smaller, more barrel-like, far- 

 ther removed from the pelvis; 

 before roundish; dorsal vertebrae 

 and ribs shorter; the last more 

 horizontal. 



Sternum shorter. 



Clavicles straighter, more inclining 

 outwards; the angle with the 

 sternum almost a right angle. 



Higher. Abdominal cavity more 

 spacious. 



Wider and shorter. Hip bones flat- 

 ter, superior border standing more 

 erect. Symphysis less elevated. 

 Distance between it and the Ttt- 

 berosit. Ischii greater; between it 

 and the acetabula, arcus pubis, 

 vaulted. Foramen obturator, tri- 

 angular. 



Broader; Coccyx narrower, more 

 moveable, less projecting. 



Shorter, the inferior converging to the 

 knees; the Trochanters broad and 

 more separated. 



Mouth and nose, together with orbits, 

 smaller; teeth smaller. 



Canalis spinalis more spacious. 



