1. The posterior lymph sacs join the cisterna chyli and lose their connections with adjacent veins. 2. Capillary plexuses and lymphatic vessels spread from the retroperitoneal lymph sac to the abdominal viscera and diaphragm. 3. The last of the lymph sacs , the paired posterior lymph sacs, develop from the iliac veins. 4. The last of the lymph sacs, the paired posterior lymph sacs , develop from the iliac veins. 5. From the jugular lymph sacs , lymphatic capillary plexuses spread to the thorax, upper limbs, neck and head. 6. The next lymph sac to appear is the unpaired retroperitoneal lymph sac at the root of the mesentery of the intestine. 7. The next lymph sac to appear is the unpaired retroperitoneal lymph sac at the root of the mesentery of the intestine. 8. The posterior lymph sacs produce capillary plexuses and lymphatic vessels of the abdominal wall, pelvic region, and lower limbs. 9. Because "'lymph sacs "'form from the venous system, they typically contain red blood cells. 10. The first lymph sacs to appear are the paired jugular lymph sacs at the junction of the internal jugular and subclavian veins.
Mobile