Catch muscle.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D002118:Calcium / Q000502:physiology; D000242:Cyclic AMP / Q000494:pharmacology; D009119:Muscle Contraction; D009126:Muscle Relaxation; D009129:Muscle Tonus; D009130:Muscle, Smooth / Q000033:anatomy & histology / Q000502:physiology* / Q000648:ultrastructure; D010766:Phosphorylation; D012701:Serotonin / Q000494:pharmacology; D014335:Tropomyosin / Q000378:metabolism
D014335:Tropomyosin; D012701:Serotonin; D000242:Cyclic AMP; D000109:Acetylcholine; D002118:Calcium