The supratrochlear vein is a small vein located in the upper part of the arm. It is also known by other names such as the frontal vein, anterior humeral vein, or pericranial vein. The supratrochlear vein receives blood from the forehead and scalp before joining the basilic vein. The basilic vein is the vein that runs along the inner side of the arm and is commonly used for venipuncture. The supratrochlear vein is an important blood vessel for medical professionals to know because it may be used for venous access during emergency situations. The vein can be easily located by palpating the area in the upper arm.