Which organ synthesizes urea nitrogen (BUN)?

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Multiple Choice

Which organ synthesizes urea nitrogen (BUN)?

Explanation:
Urea nitrogen is produced in the liver through the urea cycle, where ammonia from amino acid breakdown is detoxified into urea. This urea is then released into the bloodstream and travels to the kidneys, which excrete it in urine. So the organ responsible for synthesizing urea nitrogen is the liver; the kidney’s role is to excrete it, not make it. The pancreas and spleen have different functions unrelated to urea production.

Urea nitrogen is produced in the liver through the urea cycle, where ammonia from amino acid breakdown is detoxified into urea. This urea is then released into the bloodstream and travels to the kidneys, which excrete it in urine. So the organ responsible for synthesizing urea nitrogen is the liver; the kidney’s role is to excrete it, not make it. The pancreas and spleen have different functions unrelated to urea production.

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