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Practice MCAT Question - Q73 - Answer!

Which tissue type would you expect to find in the walls of the nephron tubules?

A.  Epithelium
B.  Connective tissue
C.  Involuntary muscle tissue
D.  Neurons

The correct answer is (A). The walls of nephrons primarily consist of epithelial cells that carry out the various processes occurring in the kidney: filtration, reabsorption, and secretion. Connective tissue cannot carry out such processes, and nerve and muscle activities play no role in this aspect of urinary function.

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