Multiple Choice
Approximately how much blood flows through both kidneys per minute in a healthy adult at rest?
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25. The Urinary System
Blood Supply of the Kidneys
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The blood supply leading directly into the nephron is the __________.
A
renal artery
B
segmental artery
C
efferent arteriole
D
afferent arteriole
E
interlobular artery
Verified step by step guidance1
Understand the structure of the nephron and its blood supply. The nephron is the functional unit of the kidney, responsible for filtering blood and forming urine.
Identify the sequence of blood vessels that supply the nephron. Blood enters the kidney through the renal artery, which branches into smaller arteries.
Recognize that the renal artery branches into segmental arteries, which further divide into interlobular arteries.
Learn that the interlobular arteries give rise to afferent arterioles, which directly supply blood to the glomerulus of the nephron.
Note that the efferent arteriole carries blood away from the glomerulus, not into it. Therefore, the afferent arteriole is the correct vessel leading directly into the nephron.
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