Biology · Epithelial Tissue
Since epithelial tissue is avascular, from which of the following sources do epithelial cells primarily receive their nourishment?
- 1Directly from the overlying fluid layer
- 2Diffusion from the underlying connective tissue✓
- 3Blood vessels penetrating the epithelial layers
- 4Intersynapsial transport from nerve endings
Correct answer
Diffusion from the underlying connective tissue
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