Which statement is correct for renal excretion?
A) It is the removal of substances that were filtered at the glomerulus or secreted but not reabsorbed.
B) It is the process by which a substance moves from the peritubular capillary blood to the tubular fluid.
C) It conserves substances that are important to the body.
D) It occurs by active transport of substances into the urinary bladder.

Question

Quizplus · Accepted Answer

Renal excretion is the removal of substances that were filtered at the glomerulus or secreted but not reabsorbed. The filtered substances include waste products and excess amounts of ions and nutrients that need to be removed from the body. Secretion refers to the active transport of certain substances, such as drugs or toxins, from the peritubular capillary blood to the tubular fluid for elimination. Reabsorption is the process by which the nephron conserves substances that are important to the body, such as glucose and amino acids. Therefore, option A is the correct statement about renal excretion. Option B is describing tubular secretion, not excretion. Option C and D are not accurate statements about renal excretion.

Which Statement Is Correct for Renal Excretion