If a patient has a major wound to the wrist, the pressure point that should be used to stop bleeding is brachial artery.
This is the artery of the upper arm, so it allows your blood to flow through your entire arm. Obviously, pressing this artery will stop the blood flow through your arm, thus blood won't run out from the wound.
Femoral artery is found in your thigh, popliteal artery is also in your leg, and carotid artery in the head.