A 1 week old newborn brought to ED due to fluid draining form his umbilicus. No other abnormalities. Only fluid that is pooled around the umbilical stump. Fluid has pH of 6.0 specific gravity of 1.020 with 1-2 epithelial cells per high powered field. 1. The fluid is passing through a patency of which of following adult remnants of an embryonic structure? 2. What is obliterated to form this structure? 3. What occurs when this is not obliterated? 4. What is the medial umbilical ligament?

How do you remember renal physiology?
Use the mnemonic, A WET BED: A) maintenance of ACID-base balance; W) maintenance of WATER balance; E) balance of ELECTROLYTES; T) removal of TOXINS; B) control of BLOOD pressure; E) production of ERYTHROPOIETIN; and D) metabolism of vitamin D.