mi: Mrs<-i.i-:s 



B. Plantar Region. 



This is subdivided into three regions: a middle, internal, and external. 



The first comprises: 1. The common short flexor of the toes which is represented in 

 Solipeds by a portion of the perfuratus. It is attached to the infero-intcriml tuberosity of 

 the os calcis, and to the upper fuco of the middle plautur apmiriir">i,~. Jt i> fnllo\\vd Ky 

 four tendons, which are inserted into the second phalanges of the first four toes, al'ti-r 

 forming rings through which pass the tendons of the common long Hrx<ir. 



2. The accessory of the lung flexor, whose fibres pass to the tendons of the common 

 flexor. 



;{. The lumbrici, four in number, and analogous to tho.-e of the hand. 



The internal plantar region is composed of three muscles, which are found in a 

 rudimentary condition in the Dog. 



Fig. 141. 



Fig. 142. 



FIRST LAYER OF PLANTAR MUSCLES 'OF 



HUMAN FOOT. 



1, Os calcis; 2, Posterior part of plantar 

 fascia divided transversely ; 3, Abductor 

 pollicis ; 4, Abductor minimi digitii ; 5, 

 Flexor brevis digitorum ; 6, Tendon of 

 flexor longus pollicis ; 7, 7, Lumbricales. 



THIRD AND PART OF SECOND LAYER OF 

 'PLANTAR MUSCLES OF HUMAN FOOT. 



1, Incised plantar fascia; 2, Musculus acces- 

 sorius; 3, Tendon of flexor longus digi- 

 torum ; 4, Tendon of flexor longus poll ids ; 

 5, Flexor brevis pollicis ; 6, Adductor pol- 

 licis ; 7, Flexor brevis minimi digitii ; 8, 

 Transversus pedis ; 9, Interossei muscles, 

 plantar and dorsal ; 10, Convex ridge 

 formed by tendon of peroneus longus in its 

 oblique course across the foot. 



1. The short adductor of the great toe, which extends from the internal tuberoeity of 

 the OB calcis to the internal sesamoid and the first phalanx of the great toe. 



2. The short flexor of the great toe, which arises from the tliird cuneiform and the 

 t"iid"ii of the posterior tibial, and terminates by two branches on the external scsumoid 

 and the internal hesamoid of the great toe. 



3. The short adductor of the great toe, a muscle formed by two fasciculi, and having a 

 common termination on the external sesamoid. One of those fasciculi arises from iln- 

 inf. rior face of the. cultoides, the third cuneiform, and the base of tin- third and fourth 

 luctatarsal ; it has been formerly described as the oblique adiluctor. The other has its 

 origin from the infeiinr face of the throe last metatarso-phalangeul articulations : this 

 hatt also been called the lrnn*vcr*<: mlilm-tof. 



