MICROANATOMY

Detailed explanation-1: -The third part of the renal tubule is called the distal convoluted tubule (DCT) and this part is also restricted to the renal cortex . The DCT, which is the last part of the nephron, connects and empties its contents into collecting ducts that line the medullary pyramids.

Detailed explanation-2: -The distal convoluted tubule is the nephron segment that lies immediately downstream of the macula densa. Although short in length, the distal convoluted tubule plays a critical role in sodium, potassium, and divalent cation homeostasis.

Detailed explanation-3: -Collecting Duct. A distal convoluted tubule connects to the collecting duct system that fine-tunes salt and water reabsorption and plays a major role in acid–base balance. The initial segment of the collecting duct, the cortical collecting duct, takes off from the distal convoluted tubule in the cortex.