Secondary Active Transport or Co-Transport

This is an example of epithelial cells of the brush border lining the intestine.

1) Na+K+ ATPase transports out Na+ to the blood
2) Na+ can diffuse in from the intestine only with a co-transported amino aicd or glucose molecule
3) Glucose diffuses from the cell to the blood through facilitated diffusion
See model!
Co-transport is active transport driven by facilitated transport.

Just for fun.....

I'm thinking of....Red... Green... Blue... Orange... Yeller... Ew, tan... Coral... Violet.