Which of the following is not a function of angiotensin ll?

Options

A. Option1 Vasoconstriction
B. Option2 Increase the glomerular blood pressure
C. Option3 Decreases the GFR
D. Option4 Increases the blood pressure

Answer

To solve the question "Which of the following is not a function of angiotensin II?", we will analyze each of the provided options based on the known functions of angiotensin II.

### Step-by-Step Solution:

1. **Understanding Angiotensin II**:
- Angiotensin II is a peptide hormone that plays a crucial role in the renin-angiotensin-aldosterone system (RAAS). It is primarily involved in regulating blood pressure and fluid balance.

2. **Analyzing the Functions**:
- **Vasoconstriction**: Angiotensin II causes vasoconstriction of blood vessels, which increases blood pressure. This is a well-established function of angiotensin II.
- **Increase in Glomerular Blood Pressure**: Angiotensin II does not directly increase glomerular blood pressure. Instead, it can lead to a decrease in glomerular filtration rate (GFR) by constricting the efferent arterioles of the glomeruli, which can help retain water and sodium.
- **Decrease in Glomerular Filtration Rate**: Angiotensin II decreases the GFR, which is a mechanism to conserve water and sodium in the body.
- **Increase in Blood Pressure**: Angiotensin II is known to increase blood pressure through various mechanisms, including vasoconstriction and stimulating aldosterone release.

3. **Identifying the Incorrect Function**:
- From the analysis, we can conclude that the statement "increase the glomerular blood pressure" is not a function of angiotensin II. Instead, it decreases the glomerular filtration rate.

4. **Final Answer**:
- The correct answer is that "increase the glomerular blood pressure" is not a function of angiotensin II (Option 2).

### Summary:
- Angiotensin II is involved in vasoconstriction, increasing blood pressure, and decreasing glomerular filtration rate, but it does not increase glomerular blood pressure.