i 

 464 MUSCLES. 



the adductor and the flexor brevis pollicis, at the external sesa- 

 moid bone. 

 It approximates the heads of the metatarsal bones. 



The Interosseous Muscles are seven in number, four of which 

 may be seen on the upper surface of the foot. There are two 

 to the first smaller toe, two to the second, two to the third, and 

 one to' the fourth, or little toe. The muscles seen on the upper 

 side of the foot are double-headed, that is, they arise from the 

 contiguous surfaces of the metatarsal bones. 



The Interosseus Primus, Digiti Primi Pedis, or the Jlbductor 

 Indicts Pedis, 



Is seen superiorly. It is placed between the metatarsal bone 

 of the great toe, and the first small toe, and arises, fleshy, by a 

 double head, from the opposed surfaces of their roots and bodies. 



It is inserted, tendinous, into the inside of the root of the first 

 joint of the first small toe, and pulls it inwards. 



The Interosseus Secundus, Digiti Primi, or the Adductor Indicis 



Pedis, 



Is also external or above. It is situated between the meta- 

 tarsal bones of the first and second small toes, arising from the 

 opposed surfaces of their roots and bodies by a double, fleshy, 

 and tendinous head. 



It is inserted into the outside of the first phalanx of the same 

 toe, by a tendon. 



It draws this toe outwards. 



The Interosseus Secundus, Digiti Secundi, or the Adductor 

 Medii Digiti, 



Is seen at the upper part of the foot, betvveen the second and 

 third metatarsal bones of the lesser toes, arising from the oppo- 

 site surfaces of their roots and bodies. 



It is inserted, tendinous, into the outside of the base of the 

 first phalanx of the second small toe. 



It draws this toe outwards. 



