What is the last portion of the nephron structure known as?

The last portion of the nephron is known as the collecting duct. This structure plays a crucial role in the final concentration of urine. It receives filtrate from the distal convoluted tubule of multiple nephrons and is responsible for reabsorbing water and electrolytes, which helps in regulating the body’s fluid balance and electrolyte levels.

The collecting duct runs through the renal medulla and empties into the renal pelvis, which is part of the drainage system of the kidney that collects urine before it moves to the ureters. The careful regulation that occurs within the collecting duct is influenced by various hormones such as antidiuretic hormone (ADH) and aldosterone. This allows the kidneys to conserve or excrete water as necessary, adapting to the body’s hydration status and maintaining homeostasis.