31. Lymphedema may be inherited ( primary ) or caused by injury to the lymphatic vessels ( secondary ). 32. The granulomas in OFG form in the lamina propria, and may form adjacent to or within lymphatic vessels . 33. These newly liberated sporozoites bore into the intestinal wall and enter the lymphatic vessels and the blood stream. 34. Etiology of Sclerosing lymphangitis is unknown but has been postulated to be secondary to thrombosis of lymphatic vessels . 35. The femoral canal contains efferent lymphatic vessels and a lymph node embedded in a small amount of areolar tissue. 36. Rhythmic contraction of the vessel walls through movements may also help draw fluid into the smallest lymphatic vessels , capillaries. 37. The lymph from the peripheral tissues contains soluble antigens and arrives at the lymph node via afferent lymphatic vessels . 38. The posterior lymph sacs produce capillary plexuses and lymphatic vessels of the abdominal wall, pelvic region, and lower limbs. 39. At this stage vascular and lymphatic endothelia were seen to be morphologically distinct and lymphatic vessels considered less important. 40. Gerota researched the anatomy and physiology of the lymphatic vessels known in textbooks as the " Gerota method ".
