An Adaptation of the Epithelial Cells of the Proximal Convoluted

question 4

Multiple Choice

An adaptation of the epithelial cells of the proximal convoluted tubule for reabsorption is

• A)thin walls.
• B)rugae folds that increase surface area.
• C)secreting enzymes that activate absorption of substances.
• D)microscopic projections called microvilli.

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