76 ANATOMY AND PHYSIOLOGY. 



humeri. Inserted into the annular ligament of the wrist, and there 

 forms the aponeurosis of the hand. Use To bend the hand. 



Flexor carpi radialis arises from the internal condyle of the os 

 humeri. Inserted into the metacarpal bone of the fore-finger. Use 

 To bend the hand. 



Pronator radii teres arises from the internal condyle of the 

 humerus and coronoid process of the ulna. Inserted into the outer 

 ridge of the radius, about the middle of its length. Use To roll 

 the hand inwards. 



Supinator radii brevis arises from the outer condyle of the 

 humerus, and edge of the ulna. Inserted into the anterior, inner, 

 and upper part of the radius. Use To roll the radius outwards, 

 and assist the anconus. 



Extensor ossis metacarpi pollicis manus arises from the middle 

 of the ulna, interosseous ligament, and radius. Inserted into the 

 os trapezium, and first bone of the thumb. Use To stretch the 

 first bone of the thumb outwards. 



Extensor primi internodii arises near the middle of the ulna, 

 interosseous ligament, and radius. Inserted into the convex part 

 of the second bone of the thumb. Use To extend the second 

 bone of the thumb outwards. 



Extensor secundi internodii arises from the back of the ulna and 

 interosseous ligament. Inserted into the third and last bone of the 

 thumb. Use To stretch the thumb obliquely backwards. 



Indicator arises from the middle of the ulna. Inserted into the 

 metacarpal bone of the fore-finger. Use To extend the fore- 

 finger. 



Flexor digitorum sublimis arises from the inner condyle of the 

 os humeri,. coronoid process of the ulna, and upper part of the 

 radius. Inserted into the second bone of each finger, after being 

 perforated by the tendons of the profundus. Use To bend the 

 second joint of the fingers upon the first, and the first upon the 

 metacarpal bones. 



Flexor digitorum profundus vel perforans arises from the upper 

 part of the ulna, and interosseous ligament. Inserted into the fore 

 part of the last bone of each of the fingers. Use To bend the 

 last joint of the fingers. 



Flexor longus pollicis arises from the upper and fore part of the 

 radius. Inserted into the last joint of the thumb. Use To bend 

 the last joint of the thumb. 



Pronator radii puadratus arises from the inner and lower part of 



