48 於正常呼吸過程中,主要負責增加胸腔容積(Intrathoracic volume)之肌肉為何?
(A)橫膈膜(Diaphragm)
(B)外肋間肌(External intercostal muscles)
(C)內肋間肌(Internal intercostal muscles)
(D)腹部肌肉(Abdominal muscles)

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統計: A(113), B(47), C(20), D(0), E(0) #1234840