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describe filtration, active transport, and passive transport in a nephron in terms of the amount of energy required and the blood and urine components that are retained or reabsorbed through each process

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The mechanism of reabsorption that takes place in the tubules of the nephron involves filtration, active transport, and passive transport. The various processes can further be described below

Mechanism of reabsorption in nephron

The nephron is the functional cell of the kidney that helps in the reabsorption, secretion, and excretion of numerous substances leading to the formation of urine.

The mechanism of reabsorption that takes place in the tubules of the nephron involves:

  • Filtration: This can be an active or a passive process depending on the area it occurs in the nephron.

  • Active transport: This type of transport requires energy to reabsorb substances against a concentration gradient in the nephron. It occurs in the proximal tubule of the nephron.

  • Passive transport: This doesn't require energy, the hydrostatic pressure produced by the heart pushes blood and solutes through the filtration membrane of the glomeruli.

Therefore, the mechanism of reabsorption that takes place in the tubules of the nephron involves filtration, active transport, and passive transport.

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