The term CARPAL TUNNEL SITE can be broken down into two words: 'CARPAL' and 'Tunnel Site'. CARPAL refers to the WRIST, which is a joint in the human body located between the forearm and the hand. The tunnel site is the area of the WRIST where the CARPAL tunnel is located. The CARPAL tunnel is a narrow passageway in the WRIST that contains the median nerve and nine tendons. This nerve and these tendons are responsible for controlling the movement of the fingers and thumb. The CARPAL tunnel can become compressed due to repetitive motions or other medical conditions, leading to pain, numbness, and tingling in the hand and fingers.