1H) 



elevated, it* followed by nn noromion \\hose c\tn-iiiity reaches to above the scapulo- 

 huiiiernl articulation. The latter is separated fn.m tin 1 remainder of tin- .-pine by a 

 const fiction called the pedicle of the' ii'-romioii. The c,>raeoid pro<v.-s is voluminous, and 



H-ellible- !l s. Illi-lleNed linger. Tile clavicle extend- from the UiTi'lllioll to the .-termini ; 



it is tlatt'-n.-d above uml In-low, mid Hexed like an italic N. 'J'his inflexion ,,f the 

 clavicle is more pronounced in the male than the female. 



B. AHM. The hnmerus of Man is much longer than tluit of animals. Its dinpln .-i.- 

 is prismatic and divisible into three face.-: the deltoid imprint has the form of a V Nsith 

 its point directed downwards. Tho voluminous articular head is turned inwards ; the 



Fig. 55. 



Fig. 56. 



HUMAN ARM-BONES; FRONT vn:w. 

 1, Shaft of ulna ; 2, Greater signmid 

 notch ; 3, Lesser sigmoid notch ; 4 Ole- 

 cranon process; 5, Coronoid prm 

 Nutrient foramen; 7, Ridges tor inser- 

 tion of interosseous membrane; 8, Capi- 

 talum ulna; 9, Styloid process; lo. 

 Shaft of radius; 11, Its head; 12, Its 

 neck ; 13, Its tuberosity ; 14, Oblique 

 line; 15, Lower end of bone; 16, Styloid 

 process. 



RJGHT HUMAN HUMERUS ; ANTERIOR 

 SURFACE. 



1, Shaft; 2, Head; 3, Neck; 4, Greater 

 tuberosity; 5, Lesser tuberosity; 6, Bici- 

 pital groove ; 7, Interior bicipital groove ; 

 8, Posterior bicipital ridge ; 9, Rough sur- 

 face for insertion of deltoid ; 10, Nutrient 

 foramen; 11, Eminentia capitata ; 12, 

 Trochlea; 13, -External condyle ; 14, In- 

 ternal condyle ; 15, External condyloid 

 ridge; 16, Internal condyloid ridge; 17, 

 Fossa for the coronoid process of ulna. 



bicipital groove is single, and looks outwards. The inferior articular surface resembles 

 that of animals, except that the condyle is more distinct. 



C. FORE-ARM. The two bones of the fore-arm, as we have already seen, only articu- 

 late by their extremities: they are separated from one another in their middle part. 

 The superior extremity of the radius corresponds to the condyle of the hiimenis; that of 

 the ulna articulates with the humeral trochlea. The coronoid process belongs to the 

 ulna. At the lower extremity of the fore-arm it is remarked : 1, That the radius cor- 

 responds to the greater portion of the carpus, while the ulna only articulates with the 

 pyramidalis; 2, That the radio-carpal articulation is protected outwardly and inwardly 

 l-y two small osseous prolongations, the styloid processes of the ulna and nidiu-. 



1). HAND. 1. Carput. The carpus of Man is composed of eight bones four in ea--h 



