62.下列何者對於偵測動脈氧分壓(Pao2 )下降，進而引發肺通氣量增加，具有最主要之角色？ (A)肺牽扯性受器(lung stretch receptors) (B)中樞化學受器(central chemoreceptors) (C)下視丘滲透壓性受器(osmoreceptors in hypothalamus) (D)頸動脈體(carotid bodies)