Question

What happens in the proximal convoluted tubule?

Accepted Answer

- Na+K+ATPase in epithelial cells - actively transports Na+ into blood using ATP- maintains concentration gradient for diffusion of Na+ from lumen into epithelial cells- to provide energy for the co-transport of glucose using the same carrier protein- glucose moves into blood by facilitated diffusion- water potential in lumen increases- water absorbed into cells by osmosis

Front	What happens in the proximal convoluted tubule?
Back	- Na⁺K⁺ATPase in epithelial cells - actively transports Na⁺into blood using ATP - maintains concentration gradient for diffusion of Na⁺ from lumen into epithelial cells - to provide energy for the co-transport of glucose using the same carrier protein - glucose moves into blood by facilitated diffusion - water potential in lumen increases - water absorbed into cells by osmosis

Na Epithelial Blood Diffusion Lumen Cells Glucose Water