(2) splanchnic smooth muscle O gastrointestinal tract: excitation ,s motility increase; secretion stimulation ② urinary bladder: detrusor(逼尿肌) contraction 令 trigone(三角区) sphincter relaxation ③ bronchus: contraction(2) splanchnic smooth muscle ① gastrointestinal tract: excitation ❖ motility increase; secretion stimulation ② urinary bladder: ❖ detrusor (逼尿肌) contraction ❖ trigone (三角区) sphincter relaxation ③ bronchus: contraction