Which of the following options has the correct pair of nephron parts that maintain pH and ionic balance of blood?

Options

A. Proximal convoluted tubule and Henle's loop
B. Distal convoluted tubule and collecting duct
C. Proximal convoluted tubule and glomerulus
D. collecting duct and Henle's loop

Explanation

To solve the question regarding which nephron parts maintain pH and ionic balance of blood, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Function of Nephrons**: Nephrons are the functional units of the kidney, responsible for filtering blood and forming urine. They play a crucial role in maintaining homeostasis, including pH and ionic balance.

2. **Identify Key Nephron Parts**: The nephron consists of several parts, but the two most relevant to maintaining pH and ionic balance are the Distal Convoluted Tubule (DCT) and the Collecting Duct.

3. **Role of Distal Convoluted Tubule (DCT)**: The DCT is involved in the reabsorption of sodium ions, bicarbonate ions, and water. This reabsorption helps regulate the pH of the blood and maintain ionic balance.

4. **Role of Collecting Duct**: The Collecting Duct also plays a significant role in maintaining ionic balance. It is responsible for the reabsorption of water and the selective secretion of potassium and hydrogen ions. This process further assists in regulating the blood's pH and ionic concentration.

5. **Conclusion**: Based on the functions of the DCT and Collecting Duct, we can conclude that the correct pair of nephron parts that maintain pH and ionic balance of blood is the Distal Convoluted Tubule and the Collecting Duct.

### Final Answer:
The correct answer is the **Distal Convoluted Tubule and the Collecting Duct**.

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