Question

List three separate, related functions of the kidney.

a) in the glomerular capillaries,
b) tubular of water and small dissolved substances back in the bloodstream,
c) of waste molecules in the distal tubule.

Answer 1

The kidney carries out glomerular filtration in the glomerular capillaries, tubular reabsorption primarily in the proximal convoluted tubule, and tubular secretion in the distal tubule.

Step-by-step explanation:

Functions of the Kidney

The kidney performs several critical functions to maintain bodily homeostasis. First, in the glomerular capillaries, blood is filtered in a process known as glomerular filtration, where almost all solutes, except for proteins, are removed from the bloodstream and collected in the renal tubules.

Following this, the filtered substances undergo tubular reabsorption, where most of the solutes and water are reabsorbed back into the bloodstream, especially in the proximal convoluted tubule (PCT). Finally, there is a process called tubular secretion that occurs in the distal tubule where additional wastes and certain solutes are actively secreted from the blood into the tubular fluid to be removed from the body.