This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Most commonly used vein for intravenous injection is: 
Select and explain. 
A. Cephalic vein, B. Basilic vein, C. Median cubital vein, D. Median vein of the forearm
C: Median cubital vein
Answer: C: Median cubital vein 
Explanation: Ans. C. Median cubital veinThe median cubital vein (or median basilic vein) is a superficial vein of the upper limb. It is very clinically relevant as it is routinely used for venipuncture (taking blood) and as a site for an intravenous cannula. It connects the basilic and cephalic vein and becomes prominent when pressure is applied. It lies in the cubital fossa superficial to the bicipital aponeurosis.