42 下列何者為神經傳導物質（neurotransmitter）由細胞體傳送至軸突末梢的方法？
(A) 軸突漿流（axoplasmic flow）
(B) 鈉－鉀幫浦（Na+-K+ pump）
(C) 胞噬作用（phagocytosis）
(D) 胞飲作用（pinocytosis）

[解釋]

     the continuous pulsing, undulatingnmovement of the cytoplasm between the cell body of a neuron, where proteinnsynthesis occurs, and the axon fiber to supply it with the      substances vital for the maintenance ofnactivity and for repair. The nerve fiber depends totally on the cell body fornmetabolites, and any interruption in the axoplasmic flow      caused by disease or trauma results in thendegeneration of the unsupplied areas of the      axon.

[出處]

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http://medical-dictionary.thefreedictionary.com/Axoplasmic+flow