160 LABORATORY MANUAL OF HUMAN ANATOMY 



(c) Long extensor of great toe (M. extensor hallucis longus). 



(d) Third peroneal muscle (M. peronaeus tertius). 



Examine the vagina tendinis M. tibialis anterioris, the vagina 

 tendinis M. extensoris hallucis longi, and the vagina tendinum M. 

 extensoris digitorum longi. 



Arteries of Anterior Tibiofibular Region and Dorsum of Foot. 



Separate the M. extensor digitorum longus from the M. tibi- 

 alis anterior and expose the following; at the same time dissect 

 out the structures on the dorsum of the foot. 



(a) Anterior tibial artery (A. tibialis anterior). (Vide Fig. 65, and 



Spalteholz, Fig. 479.) How does this artery pass to the 

 anterior compartment of the leg, and what is its relation 

 to the membrana interossea cruris? 



(aa) Posterior recurrent tibial artery (A. recurrens tibialis pos- 



terior). 



(ab) Anterior recurrent tibial artery (A recurrens tibialis an- 



terior). 



(ac) Lateral anterior malleolar artery ( A. malleolaris anterior lat- 



eralis) (0. T. external malleolar). 



(ad) Medial anterior malleolar artery (A. malleolaris anterior 



medialis) (0. T. internal malleolar). 



(ae) Medial malleolar network (rete malleolar e mediale). 



(af) Lateral malleolar network (rete malleolar e laterale). 



The continuation of the anterior tibial artery from in front of the 

 ankle-joint is known as the 



(b) Dorsal artery of the foot (A. dorsalis pedis). 



(ba) Lateral tarsal artery (A. tarsea lateralis). 



(bb) Medial tarsal arteries (Aa. tarseae mediales). 

 (be) Arcuate artery (A. arcuata). 



(bd) Dorsal network of foot (rete dorsale pedis). 



(be) Dorsal metatarsal arteries (Aa. metatarseae dorsales). 



(bf) Deep plantar branch (R. plantaris profundus). 



Nerves of Anterior Region of Leg and Dorsum of Foot. 



(a) Deep peroneal nerve (N. peronaeus profundus) (0. T. anterior 



tibial). 



(aa) Muscular branches (rami muscular es] . 



(ab) Dorsal digital nerves to lateral surface of hallux and to 



medial surface of digit II. (Nn. digitales dorsales hallucis 



lateralis et digiti secundi medialis). 



Determine how the deep peroneal reaches the anterior surface of the 

 leg. Does it accompany the artery? What area of the skin does it 

 supply? What muscles are supplied by this nerve? 



(b) Superficial peroneal nerve (N. peronaeus superficialis) (0. T. mus- 



culocutaneous). 



(ba) Muscular branches (rami muscular es). 



(bb) Medial dorsal cutaneous nerve (N. cutaneus dorsalis me- 



dialis). 



