The left ventricle pumps blood through the aortic semilunar valve into the aorta. From the aorta, blood enters into systemic circulation throughout the body tissues until it returns to the heart via the vena cava and the cycle repeats.he left ventricle pumps blood through the aortic semilunar valve into the aorta. From the aorta, blood enters into systemic circulation throughout the body tissues until it returns to the heart via the vena cava and the cycle repeats.
The signs and symptoms of superior mesenteric artery syndrome vary but may include: 1  Feeling full quickly when eating. 2  Bloating after meals. 3  Burping (belching)  Nausea and vomiting of partially digested food or bile-like 1  liquid. Small bowel obstruction.  Weight loss.
Mesenteric lymphadenitis can cause pain in the abdomen. Mesenteric lymph nodes are part of the lymphatic system. A large intestine infection can cause inflamed mesenteric lymph nodes. Mesenteric lymph nodes are usually discovered during an abdominal CAT scan.The symptoms of mesenteric lymphadenitis are similar to the symptoms of appendicitis.art of the lymphatic system, these lymph nodes are a vital part of the immune system that helps the body fight disease. The lymphatic system itself spreads throughout the entire body, carrying specialized cells that trigger immune system responses when necessary. Ad.