Extrinsic muscles are contained within a region such as the hand or the leg, and the intrinsic muscles move the fingers but are found outside the region.
Intrinsic muscles are inside your body, extrinsic muscles are outside your body.
Extra info.
Intrinsic muscles of hand are the muscles present (originate and insert) in the hand and are responsible for hand movements whereas extrinsic muscles are present in the forearm and are responsible for hand movements.
Intrinsic muscles are contained within a region such as a hand or the leg and extrinsic muscles move the fingers but are found outside the region.
