How might eating a meal hgih in NaCl concentration aid in absorption of glucose or some amino acids?
Using the co-transport of glucose. Na+ and glucose bind to SGLT transporter molecule. The Na+ will be higher in the ECF. The elctrochemical gradient will be steeper because of high concentration outside than inside of cell. The gradient of Na+ provides the energy for moving glucose against its concentration gradient (glucose low to high in cell but uses Na+ to move it. 1 glucose high to low outside cell uses facilitated diffusion.
2Na+ high to low concentration in cell moves in, picks up 1 Na+, 3 move out through Na+/K+ pump because goes low-high.