First slide

Human Excretory System

Question

Which of the following statements is true with regard to human kidney?

Moderate

A

Columns of Bertini divide the renal medulla into medullary pyramids.
B

PCT and DCT of all nephrons lie in the medullary pyramids.
C

Renal pelvis opens into the uterus which, in turn, opens into the urinary bladder.
D

All cortical nephrons have a very well-developed vasa recta.

Solution

Columns of Bertini divide the renal medulla into medullary pyramids.
PCT and DCT of all nephrons lie in the cortical region.
Renal pelvis opens into the ureters which in turn open into bladder.
Vasa recta is reduced or completely absent for the cortical nephrons.

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