Absorption of glucose/amino acids by co-transport in the ileum involves active pumping of Na+ out of epithelial cells, creating a gradient that allows Na+ and the co-transported substance to diffuse in, then glucose diffuses into the blood.
L'assorbimento di glucosio/amminoacidi tramite co-trasporto nell'ileo comporta il pompaggio attivo di Na+ fuori dalle cellule epiteliali, creando un gradiente che permette la diffusione di Na+ e del co-trasportato contro il gradiente. Il glucosio viene poi facilitato nella diffusione nel sangue.
| Front | Describe the absorption of glucose/amino acids by co-transport in the ileum. |
|---|---|
| Back | - sodium potassium ATPase actively transports 3 Na+ from epithelial cell into blood - and 2 K+ from blood into epithelial cell - maintains concentration gradient allowing - provide energy for co-transport of glucose against concentration gradient using the same carrier protein - glucose diffuses by facilitated diffusion from epithelial cell into blood Look at Diagram in Notes |
Tags: digestion
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