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Multiple Choice
What is considered the functional unit of the kidney?
A
Renal pelvis
B
Nephron
C
Ureter
D
Glomerulus
Verified step by step guidance
1
Understand the question: The problem is asking for the functional unit of the kidney, which means the smallest structure within the kidney that performs its essential functions.
Review the options provided: The options include 'Renal pelvis,' 'Nephron,' 'Ureter,' and 'Glomerulus.' Each of these is a part of the urinary system, but only one is the functional unit of the kidney.
Define the term 'functional unit': In anatomy, a functional unit is the smallest structure that can independently perform all the primary functions of an organ. For the kidney, this includes filtration, reabsorption, secretion, and excretion.
Analyze the options: The nephron is the structure responsible for filtering blood, reabsorbing nutrients, and forming urine. The renal pelvis is a funnel-like structure that collects urine, the ureter transports urine to the bladder, and the glomerulus is a part of the nephron that specifically handles filtration.
Conclude that the nephron is the correct answer because it is the smallest structure capable of performing all the essential functions of the kidney, making it the functional unit.