Incorrect about ADH function

Options

A. Increase BP
B. Increase glomerulur blood flow
C. Increase GFR
D. Lowers BP

Answer

To determine which statement about the function of Antidiuretic Hormone (ADH) is incorrect, we will analyze the options provided based on the known functions of ADH.

### Step-by-Step Solution:

1. **Understanding ADH**:
- Antidiuretic Hormone (ADH), also known as vasopressin, is produced in the hypothalamus and released from the posterior pituitary (neurohypophysis). Its primary role is to regulate water balance in the body.

**Hint**: Remember that ADH is related to water retention and blood pressure regulation.

2. **Evaluating Option 1**:
- **Statement**: "Increases BP"
- **Analysis**: ADH causes vasoconstriction, which leads to an increase in blood pressure. Thus, this statement is correct.

**Hint**: Think about how constricting blood vessels affects blood pressure.

3. **Evaluating Option 2**:
- **Statement**: "Increases Glomerular blood flow"
- **Analysis**: ADH primarily acts on the kidneys to promote water reabsorption, which can lead to an increase in glomerular filtration rate (GFR), but it does not directly increase glomerular blood flow. This statement is misleading as it implies a direct increase in blood flow rather than an increase in filtration due to water retention.

**Hint**: Consider how ADH affects kidney function and whether it directly influences blood flow.

4. **Evaluating Option 3**:
- **Statement**: "Lowers BP"
- **Analysis**: This statement is incorrect. As established, ADH increases blood pressure through vasoconstriction. Therefore, this option is indeed incorrect.

**Hint**: Recall the primary function of ADH in relation to blood pressure.

5. **Conclusion**:
- The incorrect statement regarding ADH function is **Option 4: "Lowers BP"**. ADH actually increases blood pressure, making this statement false.

### Final Answer:
The incorrect statement about ADH function is **Option 4: "Lowers BP"**.