Which statement best explains the process of filtration in the nephron?
A)Filtration occurs as a result of passive and active transport mechanisms from all parts of the renal tubules; a major portion of reabsorption occurs in the proximal tubule.
B)Filtration is the movement of molecules out of peritubular blood and into the tubule for excretion.
C)Filtration is the movement of molecules out of the tubule and into peritubular blood.
D)Filtration is the movement of water and protein-free solutes from plasma in the glomerulus into the capsular space of the glomerular capsule.

Question

Quizplus · Accepted Answer

Filtration is the movement of water and protein-free solutes from plasma in the glomerulus into the capsular space of the glomerular capsule. This occurs in the beginning of the nephron, in the renal corpuscle, where blood enters the glomerulus and passes through the filtration membrane, which consists of the endothelial cells of the glomerular capillaries, the basement membrane, and the podocytes of the visceral layer of the glomerular capsule. The filtrate then enters the renal tubules, where reabsorption of nutrients, ions, and water occurs, primarily in the proximal tubule.

Which Statement Best Explains the Process of Filtration in the Nephron