Question

disable the structure of functional units of kidney

Answer 1

The structural and functional unit of a kidney is Nephron.
The kidneys play a role in maintaining the balance of body fluids and regulating blood pressure, among other functions. The kidneys are located at the back of the abdominal cavity, one on each side of the spine.
I guess....
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Answer 2

Answer: the structure of functional units of kidney is

nephron