Answer to Question #176857 in Cell Biology for Maik

Question #176857

How does a glucose molecule transport from the intestinal lumen into the blood?



1
Expert's answer
2021-03-30T05:04:04-0400

Solution: How does a glucose molecule transport from the intestinal lumen into the blood?

Answer: Glucose is absorbed by sodium glucose co-transport mechanism. The transport of nutrients from intestinal lumen into blood stream is called absorption. The process of transport of glucose from intestinal lumen into the absorptive cell has two stages. In the first stage sodium ion from inside the cells are transported to interstitial fluid. This leads to low sodium concentration inside the cell. Then starts the second stage. As a result of low sodium inside the cells, sodium ions are transported from intestinal lumen by facilitated diffusion. Once into the cell, other transport proteins and enzymes cause facilitated diffusion of glucose through basal and lateral membranes of the cell into interstitial fluid and from there into the blood.

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