272 



NERVOUS SYSTEM. 



THE NERVOUS SYSTEM .-Continued. 



DISTRIBUTION OF THE BRANCHES 



FROM THE 7 GREAT TRUNKS OF THE LUMBAR PLEXUS. 



(A CONTINUATION OF THE TABLE ON PAGE 288.) 



(l). lUO-HYPOGASTRIC . 



f Iliac, to skin of gluteal region. 



v Hypogastric, to skin of that region. 



(*). ILIO-INGUINAL fto Internal Oblique Muscle. 



l to skin of upper and inner thigh, scrotum, penis. 



/ Genital, to Cremaster, scrotum, round ligament. 

 1 Crural, to skin of upper and front thigh. 



(3). GENITO-CRURAL 



(4). EXTERNAL CUTANEOUS 



jAnt. Br. to skin of ant. and outer thigh, above knee. 

 \Post. Br. to skin of post, aud outer thigh, above knee. 



(5). ANTERIOR 



CRURAL. 



(6). OBTURATOR. 



Ant. 

 Div. 



Mid. Cutaneous. 



Int. Cutaneous. 



fto Sartorius, and skin of ant. thigh 

 <- above knee. 



lExt. Br. to skin, lateral of knee. 

 < Post. Br. to skin of inner thigh 

 ( and leg. 



Long Sa P henous.\ io Skin of knee and of front and 

 < inner leg and foot. 



Post. $ Muscular Brs. to muscles on front of thigh, all but 2. 

 Div. t. Articular Brs. (2) to capsules of knee- and hip-joints. 



t Articular Brs. to hip-joint. 



* < Muscular Brs. to Adductors, Gracilis and Pectineus. 

 T ' \-Anastomotic Brs. with Int. Cutan. and Int. Saphenous. 



Post, f Articular Brs. to knee-joint. 



Br. 1 Muscular Brs. to Adduc. mag. and Obturator externus. 



Ant. 



r Muscular Br. to Pectineus. 

 (7). ACCESSORY OBTURATOR.^ Articular Br. to hip-joiut. 



1 Occasionally 

 I Cutaneous Br. to skin of thigh and leg. ) P resent - 



The Lumbar Plexus lies in the substance of the Psoas muscle, in front of the trans- 

 verse processes of the lumbar vertebrae. 



