Practice MCAT Question - Q135 - Answer!
From where do materials move into the filtrate by urinary secretion?
A. Afferent arteriole
B. Bowman’s capsule
C. Efferent arteriole
D. Peritubular capillaries
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The correct answer is (D). Urinary secretion refers to the transport of materials from the blood (peritubular capillaries) to the filtrate at the latter parts of the nephron.
