240 MYOLOGY, OR ANATOMY OF MUSCULAR SYSTEM 



Adduction. Abduction. 



Tibialis posticus (strongly). Peroneus brevis. 

 Tendo Achillis (weakly). Peroneus longus. 



Perhaps tendons behind the inner 



malleolus, perhaps the tibialis 



anticus. 



Rotation in. Rotation out. 



Tibialis anticus (strongly). Peroneus longus. 



Tendo Achillis. Extensor communis digitorum. 



Peroneus tertius. 



NOTE. The following are included under Muscles of Thorax, 

 page 198. 



Levatores costarum muscles are twelve in number, one on 

 each side. They arise by small tendinous and fleshy -bundles 

 from the extremities of the transverse processes of the seventh 

 cervical and the eleven upper thoracic vertebrae. Pass obliquely 

 downward and outward to be inserted into the upper border, 

 between the tubercle and the angle, of the rib, adjacent to its 

 vertebrae of origin, below. Each of the inferior levatores divides 

 into two fasciculi, one of which is inserted as above described; 

 the other fasciculus passes to the second rib below its origin; 

 thus each of the lower ribs receives fibers from two vertebra*. 



