MYOLOGY 117 



Adductor Longus (Fig. 24, No. 19). Location. — In the posterior 

 femoral region. 



Origin. — From a line on the lateral part of the pelvis. 



Insertion. — The fibers, passing downward and forward, are in- 

 serted on a longitudinal line along the posterior part of the shaft of 

 the femur. 



Shape. — Broad, flat, fleshy. 



Relations. — Posteriorly to the femur, and anteriorly to the adduc- 

 tor magnus. 



Action. — ^Adducts the thigh. 



Adductor Magnus (Fig. 24, No. 18). Location. — Posterior femoral 

 region. 



Origin. — From the hne constituting the lower boundary of the 

 ischiatic fossa on the outer lateral part of the pelvis. 



Insertion. — The fibers pass downward and are inserted to 

 the superior curve of the internal femoral condyle. The internal 

 head of the gastrocnemius blends with this muscle just above its 

 attachment. 



Shape. — Long, narrow. 



Relations. — Posteriorly to the adductor magnus and anteriorly 

 to the semimembranosus. 



Action. — Strongly adducts the thigh. 



THE TIBIAL GROUP 



Gastrocnemius Tibiahs anticus 



Peroneus longus Extensor hallucis brevis 



Extensor longus digitorum Flexor perforatus indicis 



Tibiahs posticus secundus pedis 



Flexor longus hallucis Flexor perforatus medius 



Flexor perforatus annularis primus primus pedis 



pe.dis Flexor perforatus indicis 



Flexor perforatus medius secundus primus pedis 



pedis Extensor brevis digitorum 



Flexor perforans digitorum pro- Flexor hallucis brevis 



fundus Extensor annularis brevis 

 Soleus 



Gastrocnemius (Fig. 23, No. 11). Location. — :Posterior tibial 

 region. 



