part of part of has muscle insertion extensor muscle forelimb zeugopod forelimb zeugopod muscle manus bone extrinsic extensor muscle of manus The extrinsic extensor muscles of the hand are located in the back of the forearm and have long tendons connecting them to bones in the hand, where they exert their action. Wikipedia:Extrinsic_extensor_muscles_of_the_hand UBERON:0011024 extrinsic extensor muscle of hand