Norepinephrine leads to increase in :

Options

A. Blood pressure
B. Urine production
C. Cellular respiration
D. Release of epinephrine

Answer

To answer the question "Norepinephrine leads to an increase in:", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Source of Norepinephrine**:
- Norepinephrine is a hormone produced by the adrenal glands, specifically from the adrenal medulla.

2. **Understand the Function of Norepinephrine**:
- Norepinephrine is known as a catecholamine and plays a crucial role in the body's response to stress or emergency situations. It is involved in the 'fight or flight' response.

3. **List the Effects of Norepinephrine**:
- Norepinephrine leads to several physiological changes, including:
- Increased heart rate
- Increased blood pressure
- Enhanced alertness
- Increased strength of heart contractions
- Increased rate of respiration

4. **Evaluate the Options Given**:
- The question provides several options: blood pressure, urine production, cellular respiration, and release of epinephrine.
- Among these, the most relevant effect of norepinephrine is its role in increasing blood pressure and enhancing cellular respiration.

5. **Select the Correct Answer**:
- Based on the functions of norepinephrine, the correct answer is that norepinephrine leads to an increase in **blood pressure** and **cellular respiration**. However, if we have to choose one, the most direct and significant effect is the increase in **blood pressure**.

### Final Answer:
Norepinephrine leads to an increase in **blood pressure**.

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