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Practice MCAT Question - Q136 - Answer!

Under the microscope, numerous structures observed in the renal pyramids have a relatively “straight-line” appearance. What parts of the nephron are probably present in the renal pyramids?

A.  Bowman’s capsules and proximal convoluted tubules
B.  Loops of Henle
C.  Collecting ducts
D.  B and C

The correct answer is (D). The “straight-line” structures, the loops of Henle and the collecting ducts, are mostly found in the pyramids of the renal medulla, while the Bowman’s capsules, proximal convoluted tubules, and distal convoluted tubules are mostly found in the renal cortex.

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