Canadian Society for Medical Laboratory Science (CSMLS) Practice Exam

Which vein is typically found in the arm?

1. Femoral vein

2. Jugular vein

3. Radial vein

4. Median cubital vein

The correct answer is: Median cubital vein

The median cubital vein is typically found in the arm and is notably significant in clinical settings, especially for phlebotomy procedures. This vein is located in the antecubital fossa, which is the region at the bend of the elbow. It is often used for blood draws and intravenous (IV) access due to its superficial position and the large amount of blood it can accommodate. In contrast, the femoral vein, found in the thigh, is much deeper in the body and is associated with lower limb venous return. The jugular vein, located in the neck, serves the upper body's venous blood drainage and is not found in the arm. The radial vein, while related to the radial artery in the forearm, is not as commonly referenced or utilized for venipuncture as the median cubital vein. Thus, the median cubital vein is the most relevant and appropriate choice when discussing veins typically found in the arm.