What creates a Na⁺ concentration gradient in the proximal tubule? A)Na⁺/K⁺ pump B)diffusion of Na⁺ C)osmosis of water D)diffusion of Cl^-

Question

Quizplus · Accepted Answer

The Na⁺/K⁺ pump actively transports Na⁺ out of the proximal tubule and into the interstitial fluid, creating a concentration gradient. This helps drive the reabsorption of other solutes, such as glucose and amino acids, along with Na⁺. Diffusion and osmosis are passive processes that can work in conjunction with the pump, but do not create the initial gradient. Diffusion of Cl^- is not directly involved in creating the Na⁺ concentration gradient.

What Creates a Na+ Concentration Gradient in the Proximal Tubule

What Creates a Na⁺ Concentration Gradient in the Proximal Tubule