Final answer:
The nephron's conduction portion is derived from the intermediate mesoderm and consists of the renal tubule, which includes the proximal convoluted tubule, loop of Henle, and distal convoluted tubule, key structures in urine concentration.
Step-by-step explanation:
The conduction portion of the nephron is primarily derived from the intermediate mesoderm during embryological development. This portion of the nephron consists of the renal tubule, which has three segments: the proximal convoluted tubule (PCT), the loop of Henle, and the distal convoluted tubule (DCT). The renal tubule is responsible for the reabsorption and secretion processes that transform the glomerular filtrate into urine. The loop of Henle, specifically, has descending and ascending limbs that form a hairpin turn and are crucial for the kidney's ability to concentrate urine.