ANATOMY IN A NUTSHELL. 499 



other set passes with the external saphenous vein to join the popliteal nodes. 

 The deep lymphatic vessels of the lower extremity accompany the following 



arteries: (1) anterior tibial, (2) posteriok tibial, (3) perineal, to the 

 popliteal nodes. From the popliteal nodes they pass with the femoral vein 

 to the deep inguinal nodes, and then under Poupart's ligamenl to the nodes 

 around the external iliac vessels. The lymphatic vessels in the gluteal region 

 pass to the "luteal nodes in the great sacro-sciatic foramen. The lymphatic 

 vessels of the ischiatic region have a similar course. 



The superficial lymphatic nodes of the lower extremity are, (1 ) eighl or ten 

 superficial inguinal nodes which lie just under the skin. They consisl of 

 two sets, (a) the upper oblique along Poupart's ligament, which drains the 

 scrotum, penis, abdominal wall, perineal and gluteal regions, and urethral 

 mucous membrane, (b) The vertical set which surrounds the saphenous open- 

 ing and receive the superficial vessels of the lower extremity. 



The deep lymphatic nodes of the lower extremity are, (1) one or two anter- 

 ior tibial, which are placed beside the anterior tibial artery on the upper part 

 of the interosseous membrane, (2) four or five popliteal, which are placed 

 around the popliteal vessels, (3) the deep inguinal, which are placed under 

 the deep fascia around the femoral vessels. These communicate with the 

 superficial inguinal nodes through the saphenous opening. (4) The gltjte \i.. 

 which follow their corresponding vessels into the great sacro-sciatic foramen 

 above the P) r riformis muscle. (5) Ischiatic which follow their corresponding 

 vessels into the sacro-sciatic foramen below the Pyriformis muscle. 



LESSON CLXV. 



The superficial lymphatic vessels of the pelvic and abdominal walls pass 



with the superficial blood vessels. (1) Those below the umbilicus pass 

 with the superficial epigastric vessels to the oblique set of the superficial inguinal 

 nodes. (2) A DEEPER SET passes with the deep epigastric vessels to the ex- 

 ternal iliac nodes which form a chain around the external iliac blood vessels. 

 Three of these nodes are found just behind the crural arch which communicates 

 with the lumbar nodes above and with the inguinal nodes below. (3) Those 



FROM THE SIDES OF THE LUMBAB PART OF THE ABDOMINAL WALL pass with the 



superficial iliac blood vessels to the oblique set of the superficial inguinal node-. 

 lmt most of them pass with the ilio-lumbar and lumbar blood vessels to the 

 lateral lumbar nodes. (4) Those of the gluteal region pass around the 

 outer side of the nates to end in the superficial inguinal nodes. (">) THOSE 

 of the scrotum A\D perineum pass with the external pudic vessels to end in 

 the superficial inguinal nodes. (6) Those of tin: penis end in the superficial 

 inguinal nodes. (7) Those which drain the mucous membrane of the 

 labia, NYMPH.E, and clitoris in the female end in the oblique set of the super- 

 ficial nodes. 



The deep lymphatic vessels of the pelvic and abdominal walls pass with the 

 chief biood vessels and are, (1) those which accompany the gluteal ves- 



BELS, (2) THOSE WHICH ACCOMPANY THE [SCHIATIC VESSELS, (•')) THOSE WHICH 



