NERVES. 47 



soleac arch becoming posterior tibial. Articula'res, (3) ; knee- 

 joint, accompanying superior internal articular, inferior in- 

 ternal articular, and azygos arteries. Muscula'res, (4 or 5XtO 

 gastrocnemius, plantaris, solcus and popliteus. Saphe'nus ex- 

 ter'nus, down between gastrocnemius heads, to middle of leg, 

 there piercing fascia and anas, with communicans peronsei, 

 then down along outer margin of tendo Achillis in company 

 with vein, supplying integument of outer side of foot and lit- 

 tle toe, communicates with musclo-cutaneous. 



T.BIA'LIS POSTE'BIOB: from lower border poplitseus passes 

 down leg with posterior tibial artery, between heel and inter- 

 nal ankle, there dividing into external and internal plantar ; 

 above lies to inside of artery, below to outer side. Muscula'reS, 

 to tibialis posticus, flexor longus digitorum, and poliicis. 

 Cuta'neua planta'ris, perforates internal annular ligament, sup- 

 p'.ying integument of heel and inner side of sole of foot. 

 Plaata'ris inter'miS : (see above) largest terminal branch accom- 

 panying internal plantar artery along inner side of foot. 

 Cuta'nei, to sole of foot. Muscula'res, to flexor brevis digito- 

 rum, and abductor poliicis. Articula'res, to tarsus and met- 

 atarsus. Digita'les, (4) ; supplying the first 3 toes (both sides) 

 and inner margin of the 4th toe, integument, articulations, 

 nails, etc., and ist and 2d lumbricales. Planta'ris exter'nus: 

 (see tibial posterior) follows course of its artery to outer side 

 of foot, supplying little toe and outer half of 4th toe, and 

 structures adjacent, flexor accessorius, and abductor minimi 

 digiti. Superficial 'Us branch goes to outer side of $th and 

 adjacent sides of 4th and 5th toes, flexor brevis minimi digiti, 

 and the 2 interossei of 4th metatarsal space. Deep branch 

 supplies remaining interossei, 2 outer lumbricales, adductor 

 poliicis, transversus pedis. 



POPLIT,E'US EZTEB'TO (or perona^us) ; % size of internus 

 poplitseus (see great sciatic); descends along outer margin of 

 popliteal space to fibula, and about i inch below its head 

 divides into anterior tibial and musculo-cutaneous. ArtlCUla'- 

 res: (2) accompanies external articular arteries to outer side 

 of knee. Sometimes a 30! is given off as a recurrent, which 

 supplies front of knee. Cllta'nei, (2 r 3); supply integument of 

 back and outer side of leg as far as its lower 3d. CoUffim'nicans 

 peronss'i, arises near fibular head, joining External saphenous 

 at middle of leg. Tibia'lis ante'rior : (see above) passes obliquely 

 forwards to front of interosscous membrane, reaching outer 

 side of anterior tibial artery at middle of leg, descending 

 thence to front of ankle it divides into external and internal 



