652 



HUMAN ANATOMY. 



These variations of the flexor longus hallucis are explicable on the basis that its history, 

 together with that of the flexor longus digitorum, has been very similar to that of the flexor 



Fig. 620. 



Internal condyle of femur 



Tendon of semimembranosus 



Popliteus 



Flexor loiigus digitorum 



Abductor and 

 flexor brevis hallucis 



Gastrocnemius 



Plantaris, cut 

 Head of fibula 



Peroneus longus 



Soleus, cut 



Tibialis posticus 



Flexor longus hallucis 



Abductor hallucis. 

 Insertion of tibialis posticus. 



Tendon of peroneus longus 



Peroneus brevis 



Tibia and posterior inferior tibio- 

 fibular ligament 



Tendo Achillis, stump 

 Internal lateral ligament 



Inner tubercle of os calcis 



Outer tubercle of os calcis 



Flexor brevis digitorum, stump 

 uctor minimi digiti 



xor accessorius 

 brevis minimi digiti 



nterosseus 

 Lumbricales 



Tendons of flexor brevis digitorum 

 Deeper dissection of right leg, showing flexors passing into foot. 



sublimis digitorum and flexor longus pollicis of the forearm. In other words, these muscles 

 represent a layer of muscle-tissue which primarily arose from the bones of the leg and was in- 

 serted into the deeper layers of the plantar aponeurosis. Later tendons differentiated from the 



