The deep tissues of the left posterior abdominal wall also drain to this group. These include the left kidney and left suprarenal(adrenal) glands, ureters, as well as the left testis (in males), or left ovary, uterine tube and cranial portion of the uterus (in females). Tributaries to these nodes include structures that are perfused by the dorsal and lateral branches of the abdominal aorta. Lateral aortic lymph nodes (ventral view) The inferior mesenteric nodes will drain to the more superior preaortic lymph nodes, or the lateral aortic lymph nodes (see below). This cluster of nodes include smaller groups associated with the sigmoid and left colic arteries, another cluster surrounding the superior hemorrhoidal artery and sigmoid mesocolon and a final pararectal cluster that is found next to the rectum. the distal third of the transverse colon, descending colon, sigmoid colon and proximal rectum). Likewise, the inferior mesenteric nodes receive lymph from the same areas supplied by the artery for which it was named (i.e. The distribution of these nodes and their associated arteries are almost identical. The afferents to the superior mesenteric nodes arise from the juxtaintestinal nodes (found between the layers of the mesentery), ileocolic nodes (found along the ileocolic artery and its branches) and the mesocolic nodes (within the mesocolon along the transverse colon). Superior mesenteric lymph nodes (ventral view) Additionally, it will also look at clinically significant points relative to this segment of the lymphatic pathway. This article will focus on the anatomical locations of these lymph nodes and vessels. More specifically, they receives lymphatic vessels which drain the skin, muscles, organs and deep tissues of the posterior abdominal wall. The retroperitoneal, or lumbar lymph nodes and vessels are responsible for draining the lymph from the abdominopelvic gastrointestinal system as well as the deep tissue of the retroperitoneal space. The lymphatic system responsible for draining these organs, as well as the abdominal musculature, of lymph is found not only adjacent to the individual organs, but also in the retroperitoneal space. The abdominal cavity contains the largest portion of our digestive tract in addition to the internal component of our renal system.
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