3i8 PRACTICAL ANATOMY. 



The Vasti Internus and Externus (Fig. 220). Cut the rectus four inches 

 above the patella and turn it aside, guarding well the vessels and nerves. You 

 will take particular notice of the form of the groove or bed in which the rectus 

 lay. This bed is on the front surface of the vastus internus, and is called the 

 crureus^ muscle. (Fig. 220.) It is not a separate muscle, but only that part of the 

 vastus internus on which the rectus lay. Along the outer margin of the rectus-bed 

 you will see the descending branch of the external circumflex artery (Fig. 223), 



Femoral vein 



Femoral artery 



I 



Pectineus 

 OBTURATOR (ANTERIOR DIV.) 



OBTURATOR (POSTERIOR 

 DIVISION) 



Adductor longus 



Adductor brevis 



OBTURATOR 

 (ANTERIOR 

 DIVISION) 



Oracilis 



Adductor magnus 



GENICULA TE 

 BRANCH OF 

 OBTURATOR 



Seml-membranoBUB 



Anoitomotica artery 



PA TELLAR BRANCH OF 

 LONG SAPHENOUS 



Sartorlua 

 Iliacus 



ANTERIOR CRURAL 



Psoas 



Tensor vaginae femoris 



Prqfunda artery 



Fectineus 

 Hectus femoris 



LONG SAPHENOUS 



NERVE TO VASTUS 

 IN TERN US 



Adductor lonftus 



Femoral artery 



FIG. 219. ANTERIOR CRIKAI AND < IUTURATOR NERVES. (Ellis.) 



attended by the nerve to the vastus externus. This artery lies in a groove which 

 separates the vastus internus from the vastus externus. Develop this groove, 

 and you will be able to turn the vastus externus aside. This latter muscle, the 

 vastus externus, overlaps the outer part of the vastus interims as far as the margin 

 of the rectus. (Fig. 218.) Now trace the rectus and the two vasti downward to 

 their conjoined insertion into the tubercle of the tibia, by the ligamentum patelhe. 

 (Fig. 216.) Also note that the vastus internus receives its nerve-supply on ib 

 anterior surface. (Fig. 219.) 



Obturator Nerve (Fig. 219). This is a branch of the lumbar plexus. It passe.- 



