title: Defining the precapillary sphincter.
mesh_terms: D000818:Animals; D002196:Capillaries / Q000033:anatomy & histology* / Q000502:physiology; D002200:Capillary Resistance; D006706:Homeostasis; D009130:Muscle, Smooth / Q000033:anatomy & histology* / Q000294:innervation; D012039:Regional Blood Flow