259.In a patient with diabetes mellitus of 30 years’ duration, complica-
tions related to kidney function may include which of the following?
a. Enhanced selectivity of the filtration barrier
b. Decreased permeability to plasma proteins
c. Increased glomerular filtration rate
d. Decreased secretion of aldosterone
e. Glycation of proteins in the basal lamina
260.Which of the following is found exclusively in the renal medulla?
a. Proximal convoluted tubules
b. Distal convoluted tubules
c. Collecting ducts
d. Afferent arterioles
e. Thin loops of Henle
390 Anatomy, Histology, and Cell Biology