Stowei.i., Nerves in tlic Domestic Cat. 297 



panics an arteriole and is distributed to the integument over 

 the cephalic surface of the proximal third of the crus; the 

 mesal ramulus (Fig. m. r. ) lies ectad of the artery and vein 

 and is distributed to the integument mesad of the vein, its 

 terminal filaments anastomosing with other filaments of the 

 nerve trunk. Below^ the knee (Fig. K.) (upon the crus) the 

 nerve continues as two divisions corresponding with the two 

 arteries, with whose courses they are nearly parallel; the 

 lateral division is distributed to the integument over the 

 cephalic surface of the distal half of the crus and the pes; 

 the 7nesal division lies in the fascia ectad of the tibia; its 

 course is just mesad of (behind) the cephalic malleolus, ectad 

 of the tendon of the M. tibialis anticus; it forms a dense 

 plexus upon the cephalic metatarsale (2) and joins the 

 plantar plexus (Fig. PI. Flan.), its terminal filaments being 

 traceable to the distal extremities of the toes and to the 

 plantar pads. 



The muscular division (deep layer of anthropotomy) of 

 the anterior crural nerve, near its origin at Poupart's liga- 

 ment, follows the prolund artery, dips entad in Scarpa's 

 triangle, and gives a branch to the M. sartorius (Fig. Sar. ), 

 which branch, 5 mm. peripherad (at the border of the M. 

 rectus femoris), lies entad of the artery and separates into a 

 peripheral and a central portion; the peripheral branch may 

 be traced in pinniform arrangement throughout the distal 

 three-fourths of the muscle to the knee; the central branch is 

 reflected at the artery and is distributed to the proximal 

 fourth of the muscle. 



At the origin of the last branch the nerve penetrates the 

 M. rectus femoris (Fig. M. r. fem.), to which three rami are 

 given. The proximal ramus innerves the proximal third of 

 the muscle, the second lies upon the ental surface of the 

 muscle and innerves its distal two-thirds, to the insertion at 

 the patella; the third ramus enters the caudal border of the 

 muscle near its middle. These three rami are motor. Five 

 mm. peripherad of the branch to the M . sartorius a ramus is 



