Tubular secretion helps to maintain a proper acid-base balance by removing one of the following from blood

Options

A. (a) `H^(+)` ions and ammonia
B. (b) Uric acid
C. (c) `H^(+)` ions and urea
D. (d) Ammonia and creatinine

Answer

**Step-by-Step Solution:**

1. **Understanding Tubular Secretion**: Tubular secretion is a crucial process in the formation of urine, occurring after filtration and reabsorption in the nephron. It involves the transfer of substances from the blood into the renal tubule.

2. **Role in Acid-Base Balance**: One of the primary functions of tubular secretion is to help maintain the acid-base balance of the body. This is important for regulating the pH levels in the blood.

3. **Components Involved in Tubular Secretion**: The substances that are typically secreted into the renal tubule include H+ ions, ammonia, uric acid, urea, creatinine, and other toxic substances.

4. **Identifying Key Components**: Among these, H+ ions (hydrogen ions) and ammonia are particularly significant in regulating the acid-base balance. They help in neutralizing excess acids in the blood, thus maintaining a stable pH.

5. **Conclusion**: Given the question asks which substance is removed from the blood to help maintain proper acid-base balance, the correct answer is H+ ions.

**Final Answer**: Tubular secretion helps to maintain a proper acid-base balance by removing H+ ions from the blood.

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