The Extensor Carpi Radialis Longus is a muscle located in the forearm. It plays a crucial role in extending and abducting the wrist, allowing for movements such as lifting the hand upward and moving it away from the body. This muscle originates from the lateral supracondylar ridge of the humerus and inserts into the base of the second metacarpal bone. This muscle is part of the extensor muscles group, which are responsible for extending various parts of the body. It works in conjunction with other muscles, including the Extensor Carpi Radialis Brevis and the Extensor Carpi Ulnaris, to facilitate smooth wrist movements during activities like gripping and throwing.