Surgeons use succinylcholine, which is an acetylcholine analog, as a muscle relaxant. care must be taken because some individuals recover abnormally slowly from this paralysis, with life-threatening consequences. such individuals are deficient in an enzyme called pseudocholinesterase, which is normally present in the blood, where it slowly inactivates succinylcholine by hydrolysis to succinate and choline. if succinylcholine is an analog of acetylcholine, why do you think it causes muscles to relax and not contract as acetylcholine does