Final answer:
Uremia is a condition where excessive urea and nitrogenous wastes accumulate in the blood due to kidney malfunction. The correct answer to where these wastes are found in the case of uremia is B. Blood.
Step-by-step explanation:
Uremia is a condition characterized by excessive amounts of urea and other nitrogenous waste products in the blood, typically resulting from kidney disorders. When the kidneys malfunction, they fail to excrete these wastes properly, leading to their accumulation. Understanding this concept involves reviewing the roles of different organs in the excretory system. Specifically, protein metabolism results in the formation of ammonia, which is converted into urea in the liver. The kidneys then excrete urea, maintaining normal blood concentration levels. When this process is impaired, blood urea levels can rise significantly, a condition known as renal uremia.
Now, addressing the student's multiple-choice question, the correct answer is that uremia is a condition in which excessive amounts of urea and other nitrogenous products of protein metabolism are found in the B. Blood. This is because the kidneys, which are responsible for filtering and excreting these wastes, are not functioning properly, causing the waste products to remain in the bloodstream.