Question

The transfer of materials from peritubular capillaries to the renal tubular lumen is called .

• A. tubular secretion
• B. tubular reabsorption
• C. ultrafiltration
• D. back flow

Answer 1

The correct option is A tubular secretion

Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen and occurs mainly by active transport and passive diffusion. Tubular reabsorption is the process that moves solutes and water out of the filtrate and back into your bloodstream. Glomerular filtration is the first step in making urine. It is the process that your kidneys use to filter excess fluid and waste products out of the blood into the urine collecting tubules of the kidney, so they may be eliminated from your body.