74 



HUMAN ANATOMY. 



Name. 

 Sternum (6). 



Ribs (3). 



UPPER 



EXTREMITY. 



Clavicle (2). 

 Scapula (7). 



Hunjerus (7). 



Ulna (3). 

 Radius (3). 



Carpus. 



Centres. 



1 for mamibrium. 



4 for gladiolus. 



1 for ensiform appendix. 



1 for each shaft, head, and tuber- 

 cle, excepting the last two, 

 which have but 2, the tuber- 

 cles being absent. 



1 for shaft. 



1 for sternal extremity. 



1 for body. 



2 for coracoid process. 

 2 for acromion process. 

 1 for posterior border. 



1 for inferior angle. 



1 for shaft. 



1 for head. 



1 for tuberosities. 



1 for radial head. 



1 trochlear portion. 

 1 for each condyle. 



1 for shaft. 



1 for olecranon. 



1 for lower extremity. 



1 for shaft. 



1 for upper extremity. 

 1 for lower extremity. 



Each has single centre: 

 Os magnum. 

 Unciform. 

 Cuneiform. 



Trapezium and semi-lunar. 

 Scaphoid. 

 Trapezoid. 

 Pisiform. 



Time of 

 Appearance. 



Middle of fretal 

 life. 



Before vertebrae. 

 Epiphysis for 

 tubercle ap- 

 pears fro m 

 10th to 20th 

 year, and 

 unites about 

 25th. 



About 30th day. 

 2d month. 



Completed b e - 

 tween 20th and 

 25th year. 



8th week. 



Upper extremity 

 ossifies 2d to 

 4th year. 



Complete about 



20th year. 

 8th week. 

 10th year. 

 4th year. 

 Soon after hu- 



merus. 

 5th vear; unites 



17th to 18th 



year. 

 2d year; unites 



20th year. 

 Upper extremity 



joins 16th year; 



lower, 20th 



year. 



1st year. 

 1st year. 

 3d year. 

 5th year. 

 6th year. 

 8th year. 

 12th year. 



