176 ANATOMY IN A NUTSHELL. 



lies between the peritoneum and the transversalis fascia. After passing under 

 the vas deferens in the male or the round ligament in the female it curves around 

 the lower and inner margin of the internal abdominal ring, then ascending it 

 pierce- the transversalis fascia and the sheath of the Rectus muscle to enter 

 inin the longesl arterial anastomosis in the body by anastomosing with the 

 superior epigastric branch of internal mammary artery. It gives the cremas- 

 ii.i.ii branch t<> the Cremasteric muscle on spermatic cord, pubic branch to 

 the hack of the pubes, and MUSCULAR branches to the adjacent muscles and 

 integument. 



The deep circumflex iliac artery is also a branch of the external iliac and 

 alter passing along Poupart's ligament to the anterior superior spine it con- 

 tinues to the crest of the ilium. The femoral artery is a continuation of the ex- 

 ternal iliac and passes through the middle of Scarpa's triangle just internal to 

 the head of the femur. This artery is an inch or two in length and here 

 it gives off the profunda artery and continues as the superficial femoral. The 

 superficial femoral passes to the apex of Scarpa's triangle then through Hunter's 

 canal, and after passing through an opening in the Adductor magnus, at the 

 junction of the middle and lower third of the thigh close to the bone, it is called 

 the popliteal artery. 



Scarpa's triangle. — (Plate LXXIV.) is bounded above by Poupart's lig- 

 ament, externally by the Sartorius muscle, and internally by the Adductor 

 longus. Its floor is formed from without inward by the Iliacus, Psoas, 

 Pectineus, Adductor brevis (?) and Adductor longus. The femoral vein 

 lies "ii the inner side of the femoral artery and the anterior crural nerve lies on 

 ii< outer side. Lymphatics and fat are behind the nerve. 



Hunter's canal.— (Plates LXIV-LXXVUI.) occupies the middle third of 

 the thigh, while Scarpa's triangle occupies the upper third. This canal is 

 bounded externally by the Vastus internus and antero-internally by ax 

 aponeurosis passing from the Vastus internus to the Adductor longus and 

 magnus which form its posterior boundary. This aponeurosis has above it 

 the Sartorius. The femoral vessels and long saphenous nerve pass through 

 tins canal. The nerve is external to and the vein postero-external to the artery. 



The Relations of the Common Femoral Artery. (Plates LXXII-LXIV- 

 LXVIII-) 



[n Front.- (1) Skin, (2) Superficial fascia, (3) Superficial inguinal glands, 

 (4) Iliac portion of fascia lata, (5) Prolongation of transversalis fascia, (6) 

 Crural branch of genito-crural nerve, (7) Superficial circumflex iliac vein, (8) 

 Superficial epigastric vein. 



Behind. — (1) Prolongation of fascia covering Iliacus muscle, (2) Pubic 

 portion of fascia lata, (3) Nerve to Pectineus, (4) Psoas muscle, (5) Pectineus 

 muscle. (6) Capsule of hip-joint. 



OUTEB SlDE. (1) Anterior crural nerve, (2) Small part of Psoas muscle. 



Inner Side. — Femoral vein. 



The Relations of the Superficial Femoral Artery. (Plates LXXII-LXIV.) 



In Front. (1) Skin, (2) Superficial and deep fasciae, (3) Internal cutane- 





