Muscles of the Lower Extremity. 



205 



Tendo 



Compart 



ft- 

 tendons 



Tendo 



M. tibiaJ. pot 



M-flex 



ha-duc. 



long-. 



Tendines 



M. adductor 



M. abduct. hUuc. 



die. min. 



firev. Tendines 



M. flax, bee 

 et abduct. 

 h*Uuo. 



ndinum. 



276. The Muscles at the 277. The Muscles at the 

 Plantar Side of the Foot. Plantar Side of the Foot 



The Muscles in the Middle of the Sole of the Foot: 



M. flexor dlgitorum communis brevis s. perforatus arises from the plantar 

 aponeurosis and tubercle of the Os calcis ; it divides into four tendons, 

 which, opposite the I. phalanges are perforated by the tendons of the 

 M. flex. dig. comm. longus, and are inserted into the sides of the II. pha- 

 langes of the four lesser toes. Below this muscle lies the Flexor accessorius 

 (Caro quadrata Sylvii), the short head of the M. flex. dig. comm. longus. 



The Inter osseous Muscles: 



Three Musculi interossei externi or dorsal interosseous (Fig. 273); 

 these arise by two heads from the adjacent sides of the II., III. and 

 IV. metatarsal bones r and are inserted into the outer sides of the 

 I. phalanges of the second, third and fourth toes. (Abductors.) 



Four Musculi interossei interni or plantar interosseous (Fig. 277); 

 they arise from the inner surfaces of the metatarsal bones, and are 

 inserted into the inner sides of the I. phalanges of the second, third, 

 fourth and fifth toes. (Adductors.) 



