940 



THE NERVOUS SYSTEM 



to the knee (figs. 691 and 693). This nerve frequently varies in size inversely with 

 the cutaneous branches of the obturator and saphenous nerves. 



The anterior branch passes vertically downwards to the junction of the middle 



FIG. 689. CUTANEOUS NERVES OF THE RIGHT THIGH. (Spalteholz.) 

 (The iliac fascia has been removed, the fascia hita retained.) 



II.Ki-ItYPOGASTRIC NERVE ..... 

 NAL NERVE pi. 



ILUl-lNGUlNAL 



Transversus abdominis ' 



Obliquus internus abdominis 



Obliquus externus abdominis .. 

 LATERAL COTAXF.nrs 

 11 It AM 'I I OF IXTER- - 

 I'llSTAL XII 

 INTERCOSTAL XII 



L AT FA! A I. (TTAXEOUS 



SER VE 



LVMBO-INGUIXAL .. 

 NER VE 



' Psoas minor 



\ (1EXJTO-FE3IORAL NERVE 



- Psoas major 



LATERAL CUTANEOUS 



XEI! 1 'E 



Hiacus 



Kfli'ninl iliac artery 



EXTERXA I. NPKRMA TIC 



NERVE 



L I 'Mil 0-1XG I 'IX A L XER I 'E 

 FEMO K.I L XER I "E 



Internal A/" nunih- artery and 



' ' ///J 



VAS DEFERENS 



Rectus abdominis 



ANTERIOR CUTANEOUS 

 I BRAKCH OF 11.1O- 

 I HYI'OIIAHTRIV XERVE 

 m Fossa ovalis 



EXTERNAL t 

 ATIC NEK VE 



ANTERIOR KCROTAL 

 NERVES 



I.... SPERMATIC CORD 

 ^K.... Great stiphenotts vein 



L,. ANTERIOR CUTANEOl'S 

 BRAXI'IIES Ol-' 

 FEMORAL XER VE 



:~ CUTAXKQl'S HHAWHEH 

 OF OBTURATOR XERVE 



AXTERIOR Cl'TAXEDI'S 

 111! I A '///;> HI' FEMORAL 

 XER VE 



and lower thirds of the thigh, where it pierces the deep fascia. It still continues 

 downwards for a short distance, then it turns outwards and passes to the front of 

 the knee, where it enters into the patellar plexus. 



