1 86 THE MUSCLES. 



Origin from the distal surface of the pisiform bone and from 

 the transverse ligament on the ulnar side of the pisiform. It 

 ends in a slender tendon which runs along the ulnar side of the 

 fifth metacarpal to its 



Insertion into the ulnar side of the base of the first phalanx 

 of the fifth digit. 



M. flexor brevis digiti quinti (Fig. 89, //; Fig. 88, e). — • 

 This covers the ventral surface of the fifth metacarpal, and is 

 really the interosseus of this digit. 



Origin by fleshy fibres from the ventral surface of the base 

 of the fifth metacarpal ; from the ventral process of the unci- 

 form bone, and from the transverse ligament proximad of the 

 fifth metacarpal. 



Insertion by fleshy fibres into the ventral border of the 

 proximal end of the first phalanx of the fifth digit. 



M. opponens (adductor) digiti quinti (Fig. 89, g). 



Origin by a flat tendon from the ventral surface of the os 

 magnum on the ulnar side of the adductor pollicis {h). It 

 passes toward the ulnar side and distad, the fibres diverging to 

 their 



Insertion (i) into nearly the whole of the radial surface of 

 the fifth metacarpal, (2) into the base of its fir.st phalanx. 



V. MUSCLES OF THE PELVIC LIMBS. 

 I . Muscles of the Hip. 



A. On the Lateral Surface of the Hip. 



Fascia of the Thigh. — After the removal of the superficial 

 fascia with its fat and blood-vessels, there is seen a strong 

 glistening fascia, the fascia lata (Fig. 68, z, page 1 17), cover- 

 ing the vastus lateralis muscle over the dorsal half of the thigh. 

 Ventrally it dips between the vastus lateralis and the biceps 

 femoris and, becoming gradually thinner, is lost on the surface 

 of the former muscle. Passing over the dorsal border of the 

 thigh, it extends beneath the sartorius and is attached to the 

 dorsal border of the vastus medialis. Toward its distal end 

 the fascia is continuous with the tendon of the biceps femoris 

 and dorsad with the border of the sartorius muscle, while 



