occurs in occurs in smooth muscle adaptation Any process in which smooth muscle adapts, with consequent modifications to structural and/or functional phenotypes, in response to a stimulus. Stimuli include contractile activity, loading conditions, substrate supply, and environmental factors. These adaptive events occur in both muscle fibers and associated structures (motoneurons and capillaries), and they involve alterations in regulatory mechanisms, contractile properties and metabolic capacities. biological_process smooth muscle plasticity GO:0014805 muscle adaptation smooth muscle tissue