The artery used for measuring blood pressure is :

Options

A. Common carotid
B. External iliac
C. Brachial
D. Aorta

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Pressure Measurement**: Blood pressure is a measure of the force exerted by circulating blood on the walls of blood vessels. It is typically measured in millimeters of mercury (mmHg).

2. **Identifying the Arteries**: There are several arteries in the body, but not all are used for measuring blood pressure. The common arteries include:
- Common carotid artery
- Brachial artery
- External iliac artery
- Aorta

3. **Selecting the Appropriate Artery**: Among the listed arteries, the brachial artery is commonly used for measuring blood pressure. This artery is located in the upper arm and is accessible for measurement.

4. **Location of the Brachial Artery**: The brachial artery can be felt on the front side of the elbow. This is where healthcare professionals typically place the cuff of a sphygmomanometer to measure blood pressure.

5. **Understanding Systolic and Diastolic Pressure**: When measuring blood pressure, two values are recorded:
- Systolic pressure: The pressure in the arteries when the heart beats.
- Diastolic pressure: The pressure in the arteries when the heart is resting between beats.

6. **Conclusion**: Therefore, the artery used for measuring blood pressure is the **brachial artery**.

**Final Answer**: The artery used for measuring blood pressure is the **brachial artery**.

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