Precision of eye movement is due to the fact that extrinsic eye muscle motor units typically innervate 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells. Precision of eye movement is due to the fact that extrinsic eye muscle motor units typically innervate 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells. True False