Inhibitory nerves to insect spiracles.
D000818:Animals; D004594:Electrophysiology; D005724:Ganglia; D007313:Insecta / Q000033:anatomy & histology*; D009046:Motor Neurons / Q000033:anatomy & histology*; D009469:Neuromuscular Junction / Q000502:physiology; D012137:Respiratory System / Q000294:innervation*