呼吸肌 Muscles of inspiration diaphragm external intercostal muscles 吸气肌：膈肌和肋间外肌 Muscles of expiration internal intercostal muscles abdominal muscles 呼气肌：肋间内肌和腹肌 Muscles of inspiration : diaphragm external intercostal muscles 吸气肌：膈肌和肋间外肌 Muscles of expiration : internal intercostal muscles abdominal muscles 呼气肌：肋间内肌和腹肌 呼吸肌