Tight junctions in the villus epithelium form an impermeable barrier to separate digestive fluids from tissues and maintain concentration gradients.
Tight junctions in the villus epithelium create an impermeable barrier, preventing digestive fluids from entering tissues and maintaining concentration gradients for unidirectional nutrient movement.
| Front | structure of villus epithelium - tight junctions |
|---|---|
| Back | impermeable barrier between plasma membrane of adjacent cells, separates digestive fluids from tissues, maintain concentration gradient by ensuring unidirectional movement |
Tags: 6_1_digestion_absorption
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