THE MUSCLES. 183 



extensor of the toes and the extens. hallucis. Use : extends the 

 first phalanx of the four inner toes. 

 Nerves : peronaeus profwndus [tibial. antJ], 



b. On the internal region of the sole of the foot. 



a. Attached to the inner surface of the first phalanx of the 



great toe. 



385. 2. Abductor hallucis. 



Pos. : on the internal border of the foot, beneath the skin, 

 under the flexor muscles of the great toe, on the outer border of 

 flex, halluc. and communis brevis. Or.: 1. The long (posterior) 

 head from the posterior and inner surface of the tuber calcanei. 

 2. The short head from os cuneiforms I. and fasc. plantaris. 

 Ins. : Os sesamoideum on the basis of first phalanx of great toe. 

 Use : to draw the great toe from the second, and flex it. 



386. 3. Flexor hallucis brevis. 



Pos.: on the first os metatarsi, between abductor and ad- 

 ductor. Or. : Os cuboideum and os cuneiforme III. Ins. : Os 

 sesamoideum internum. Use : flexes the first phalanx of great toe. 



j3. Attached to the external surface of the first phalanx of the 

 great toe. 



387. Adductor hallucis. 



Pos. : strong, triangular, in the concavity between the second 

 and fifth os metatarsi, above flexor longus, lumbricales, under 

 inter ossei and Art. plantar, externa; on its inner border: tendo 

 peronsei longi and flex, halluc. brevis. Or.: 1. Os cuboideum 

 with flex, hallucis brevis. 2. Tendo per onsei longi, oblique to 

 the insertion: into Os sesamoideum externum. Use: draws the 

 great toe outwards towards the centre of the foot, and flexes it. 



388. 5. Transversalis pedis (s. adductor transversus}. 

 Pos. : small, and transverse between os tnetatars. IV. and 



hallux in the anterior part of the concavity of the metatarsus, 

 above lumbricales, under interossei; is the anterior short head 

 of the last muscle. Or. : Capitul. oss. metat. IV. and V. Ins. : 

 Os sesamoideum externum. Use : approximates the great to the 

 little toe, making the sole hollow (like mm. opponentes of hand). 



c. On the outer region of the sole of the foot. 



389. 6. Abductor digiti minimi. 



Pos. : close above fasc. plantar, extern., under the following 

 muscle ; on the outer edge of the foot. Or. : tuber, extern, cal- 

 canei and aponeur. plantar, ext. Ins. : Basis phalang. I. of the 



