MUSCLES OF THE FRONT OF THE TRUNK. 479 



is called the kumerus ; this has a large rounded head, which 

 is received into the glenoid cavity of the scapula ; whilst its 

 lower end is rather flattened, so as to articulate with the two 

 bones of the fore-arm in the hinge-joint of the elhow. The 



Fig. 227. MUSCLES OF THE FRONT OF THE TRUNK, THE SUPERFICIAL LATER 



BEING SHOWN ON THE LEFT SIDE OF THE FIGURE, THE MIDDLE LAYER ON THE 

 RIGHT. 



1, sternum; 2, sternal portion of the pectoralis major; 3, clavicular portion of the 

 same muscle; 4, space between the deltoid and pectoral muscles; 5, deltoid; 6, 6, 

 clavicles; 7, external oblique; 8, digitations of the serratus magnus ; 9, 9, latissi- 

 musdorsi; 10, aponeurosis of the external oblique; 11, linea alba; 12, umbilicus; 

 13, pectoralis minor; 14, 14, crests of the iliac bone; 15, symphysis of the pubis ; 

 16, crural arches; 17, rectus abdominis; 18, inferior oblique; 20, internal inter- 

 costal; 21, external intercostal; 22, infra-clavicular; 23, coracoid process; 21, in- 

 ferior border of the internal oblique and transversalis muscles; 25, short head 

 of the biceps ; 26, long head of the biceps ; 27, biceps ; 28, sternomastoid ; 32, 

 adductor of the thigh; 33, rectus femoris. 



