What is the route a red blood cell would take to circulate through a kidney, starting from the aorta?
A. renal artery ? afferent arteriole ? glomerulus ? efferent arteriole ? vasa recta ? renal vein
B. renal vein ? efferent arteriole ? glomerulus ? afferent arteriole ? vasa recta ? renal artery
C. renal artery ? afferent arteriole ? vasa recta ? efferent arteriole ? glomerulus ? renal vein
D. renal artery ? vasa recta ? afferent arteriole ? efferent arteriole ? glomerulus ? renal vein
E. renal artery ? glomerulus ? afferent arteriole ? efferent arteriole ? vasa recta ? renal vein
F. renal vein ? glomerulus ? efferent arteriole ? afferent arteriole ? vasa recta ? renal artery
G. renal vein ? vasa recta ? afferent arteriole ? glomerulus ? efferent arteriole ? renal artery
Answer: A
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