178 SPECIAL ANATOMY. 



space, which reaches from the femoral ring as far as to the spot 

 where the anterior layer of the three-sided sheath of the Vasa 

 cruralia commences ; it consists of a three-sided fossa (fossa 

 ileo-pectined), between m. pectineus (internally) and psoas (ex- 

 ternally), which by an incomplete anterior wall, the tendinous 

 proc. falciformis, is formed into a canal. It goes downwards 

 and inwards, is on the outer side an inch and a half, on the inner 

 half an inch long. The superior border of proc. falciform. 

 attaches itself to lig. Poupartii, and reaches as far as lig. Gim- 

 bernati ; here, at the free, crescentic, internal border of proc. 

 falciform, is a large anterior interval, oval fossa (fossa ovalis), 

 through which V. saphena interna (and the place at which the 

 hernia cruralis generally) passes ; it is covered by the superficial 

 layer of fas c. superfic. (here lamina cribrosa, on account of the 

 numerous openings for vessels, nerves, and lymphatic glands), 

 superficial inguinal glands, and skin. The femoral canal termi- 

 nates below in a small opening, at the entrance to the sheath of the 

 vasa cruralia. 



C. Muscles of the Leg. 

 a. On the anterior surface. 



366. 1. Tibialis anticus s. hippicus. 



Pos. : beneath the skin, along the outer surface of the tibia ; 

 close to it on the outer side : extens. digitor. ped. com/mm, and 

 (below) propr. hallucis (separated from Vasa and Nn. tibiales 

 antici). Or. : the two upper-thirds of the outer surface of the 

 tibia ; the ligam. interosseum. Ins. : Os cuneiforme I. and 

 basis oss. I. metatarsi (internal surface) ; projecting strongly. 

 The tendon passes over the inferior extremity of the tibia to- 

 wards the inner side of the foot. Use : flexes the foot, that is to 

 say, approximates the back of the foot to the leg, and rather 

 raises the inner border of the foot. 



367. 2. Extensor hallucis longus. 



Pos.: between 1. and 2.; external to tibial. antic. , separated 

 from it behind by Vasa and N. tibial ant. ; on the outer side of 

 its tendon : art. pediaea. Or. : internal to and behind the last 

 muscle, from the centre of the inner surface of the fibula and 

 from lig. interosseum. Ins. : Bans Phalangis II. hallucis. 

 The tendon passes at a right angle over the dorsum of the foot 

 upon the first metatarsal bone. Use : extends both phalanges of 

 the great toe, flexes and raises the inner border of the foot a little. 



368. 3. Extensor digitorum communis longus. 



Pos. : beneath the skin, between tibial ant. and extens. halluc. 



