228 



ATLAS AND TEXT-BOOK OF HUMAN ANATOMY. 



The plantar inter ossei (Fig. 314) are stronger than the dorsal. They arise from the outer 

 borders of the three outer metatarsal bones and pass to the same borders of the corresponding 

 toes. 



The interossei pedis are supplied by the external plantar nerve. Their functions are the same as those of the palmar 

 intcrossei, with certain modifications dependent upon the difference in their position (see page 203). 



THE LUMBRICALES. 



The lumbricales (Fig. 311) of the foot arise from the tendons of the flexor digitorum longus; 

 the first lumbricalis has a single origin from the inner margin of the first tendon and the other 



Fig. 313.— Diagram of dorsal interossei of the foot. Fig. 314.— Diagram of the plantar interossei of the foot. 



three have a bicipital origin. In the vicinity of the metatarsophalangeal joints, they pass from 

 the inner side into the dorsal aponeuroses of the toes. At their insertions are usually situated 

 small bursse, the Jumbrical bursa. 



These muscles are supplied in a variable manner partly by the external plantar nerve and 

 partly by the internal plantar nerve. Their functions are similar to the corresponding muscles 

 in the hand (see page 203). 



