So that means inside the cell, we have a low concentration of sodium. And on the outside, we have a higher amount of sodium. So that means because we have a higher amount of sodium on the lumen side, the sodium will travel into the cell via this special type of co transporter protein. The reason it's called a co transporter is because as the sodium moves down its electrochemical gradient that was established by this ATPA pump the glucose or galactose is brought in with the movement of this sodium. So as the sodium moves in, the glucose and galactose also moves in via this same cotransport of protein. Now, as soon as glucose, galactose and fructose is inside the cell, they can then diffuse via passive diffusion, passive transport via special type of protein that is found on the basil lateral side shown in green.