Final answer:
Juxtamedullary nephrons have a longer loop of Henle compared to cortical nephrons, allowing for better regulation of urine concentration by extending into the renal medulla and efficiently recovering Na+ and water.
Step-by-step explanation:
Juxtamedullary nephrons differ from cortical nephrons in several ways, but particularly in the length of the loop of Henle. Juxtamedullary nephrons have a longer loop of Henle, which extends deep into the renal medulla. This structure allows them to regulate urine concentration more effectively. In contrast, cortical nephrons typically have a short loop of Henle that does not extend far into the renal medulla. The loop of Henle in the juxtamedullary nephrons is highly specialized, allowing for efficient recovery of Na+ and water, crucial for maintaining the body's fluid and electrolyte balance.
This setup is key in the process that generates a concentrated urine, conserving water for the body.Juxtamedullary nephrons differ from cortical nephrons in several ways. One key difference is that juxtamedullary nephrons have a longer loop of Henle, while cortical nephrons have a shorter loop of Henle. This difference allows juxtamedullary nephrons to regulate urine concentration better than cortical nephrons.