Final answer:
Most uric acid reabsorption occurs in the proximal convoluted tubule (PCT) where the kidneys reabsorb various substances from the filtrate; other parts of the nephron, including the loop of Henle, DCT, and collecting ducts, also contribute to urine formation. The correct option is a) Proximal tubule
Step-by-step explanation:
When it comes to the handling of uric acid by the kidneys, most reabsorption occurs in the proximal convoluted tubule (PCT). The primary function of the PCT is to reabsorb water, ions, and other substances from the filtrate and return them to the blood. The kidneys handle up to 180 liters of fluid per day, and the PCT plays a significant role in reclaiming much of this volume.
The loop of Henle, the distal convoluted tubule (DCT), and the collecting ducts are also involved in the reabsorption and fine-tuning of the filtrate which will eventually become urine that is excreted from the body. The collecting ducts play a crucial role in the fine-tuning of water recovery through the influence of antidiuretic hormone (ADH), which allows them to reabsorb nearly all of the water passing through them in cases of dehydration. The correct option is a) Proximal tubule