Florida Basic Recruit Training Program High Liability (First Aid) Practice Exam

What is the primary artery located in the lower arm, felt at the thumb side of the wrist?

1. Brachial artery

2. Femoral artery

3. Radial artery

4. Carotid artery

The correct answer is: Radial artery

The primary artery located in the lower arm that can be felt on the thumb side of the wrist is the radial artery. This artery is a continuation of the brachial artery, which runs from the upper arm down towards the wrist. As it reaches the wrist, it branches into the radial and ulnar arteries. The radial artery is particularly important for assessing pulse because it is easily accessible at the wrist. Health professionals often check the radial pulse to gauge heart rate and circulatory efficiency. The location of the radial artery near the thumb side of the wrist makes it a key site for clinical assessment, especially in first aid situations where quick evaluation of circulation might be necessary. Understanding the anatomical position and function of the radial artery is crucial for anyone in the medical or first response fields, as it plays a significant role in patient assessment during emergencies.