Final answer:
The distal convoluted tubules and collecting ducts are subject to hormonal influence, specifically aldosterone. Aldosterone increases the reabsorption of sodium and the secretion of potassium in these tubules.
Step-by-step explanation:
The distal convoluted tubules and collecting ducts are subject to hormonal influence. Aldosterone, a hormone produced by the adrenal glands, increases the amount of sodium-potassium ATPase in the basal membrane of the distal convoluted tubule (DCT) and collecting duct. This leads to the reabsorption of sodium and the secretion of potassium, which helps in maintaining the balance of water and mineral salts in the blood.