NEET PG DENTAL EXAM

Detailed explanation-1: -Tubular reabsorption is the movement of substances into the blood from the filtrate.

Detailed explanation-2: -Most filtered substances are reabsorbed. Urea, NH3, creatinine, and some drugs are filtered or secreted as wastes. H+ and HCO3– are secreted or reabsorbed as needed to maintain acid–base balance.

Detailed explanation-3: -Reabsorption is the movement of water and solutes from the tubule back into the plasma. Reabsorption of water and specific solutes occurs to varying degrees over the entire length of the renal tubule. Bulk reabsorption, which is not under hormonal control, occurs largely in the proximal tubule.

Detailed explanation-4: -The correct option is D. tubular secretion; tubular reabsorption. Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen and occurs mainly by active transport.