Multiple Choice
Which structure in the nephron is primarily responsible for filtration of blood?
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25. The Urinary System
The Nephron
Multiple Choice
In the context of the nephron, the functional unit of the kidney is the:
A
Renal capsule
B
Renal pelvis
C
Nephron
D
Ureter
Verified step by step guidance1
Step 1: Understand the question is asking about the functional unit of the kidney, which is the smallest structure capable of performing the kidney's essential functions.
Step 2: Recall that the nephron is the microscopic structural and functional unit of the kidney responsible for filtering blood and forming urine.
Step 3: Differentiate the nephron from other kidney structures: the renal capsule is a protective outer layer, the renal pelvis is a funnel-shaped structure collecting urine, and the ureter is a tube transporting urine to the bladder.
Step 4: Recognize that the nephron includes components such as the glomerulus and renal tubules, which work together to filter blood, reabsorb needed substances, and secrete wastes.
Step 5: Conclude that the nephron is the correct answer because it performs the kidney's primary functions of filtration, reabsorption, and secretion.
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