Explain how the peritubular capillaries are adapted for receiving reabsorbed substances.

The descending limb of the nephron loop is relatively impermeable to solutes and freely permeable to water.

How is Na⁺ reabsorbed?

When the concentration of ADH increases, __________.

Describe what is involved in active and passive tubular reabsorption.

Tubular reabsorptiona. of glucose and many other substances is a Tₘ -limited active transport process,b. of chloride is always linked to the passive transport of Na⁺ ,c. is the movement of substances from the blood into the nephron,d. of sodium occurs only in the proximal tubule.

Glucose is not normally found in the urine because ita. does not pass through the walls of the glomerulus,b. is kept in the blood by colloid osmotic pressure,c. is reabsorbed by the tubule cells,d. is removed by the body cells before the blood reaches the kidney.

Which is reabsorbed by the proximal convoluted tubule cells?a. Na⁺,b. K⁺,c. amino acids,d. all of the above.