396 Anatomy, Histology, and Cell Biology
260.The answer is e.(Junqueira, pp 374–377.)Only the thin loops of
Henle are found exclusively in the medulla. The collecting ducts are found
in both the cortex and medulla of the kidney (answer c).Cortical collect-
ing ducts are found in the medullary rays, whereas medullary collecting
ducts are found in the medulla and lead into the papillary duct. The con-
voluted portions of the proximal and distal tubules are found exclusively in
the cortex (answers a and b).Afferent arterioles (answer d)are found
adjacent to the vascular pole of the glomeruli within the cortex.