問題詳情

49 Metoclopramide 可以促進胃腸蠕動功能以及止吐作用的主要藥理機制在於:
(A)5HT 4 受體拮抗劑
(B)抑制胃腸道Acetylcholinesterase 的酵素活性
(C)是motilin 受體的致效劑
(D)多巴胺D 2 受體拮抗劑

參考答案

答案:D
難度:適中0.666667
統計:A(2),B(0),C(1),D(6),E(0)

用户評論

Jason Chen】評論

Figure 2.Mechanism of action of metoclopramide. (A) Metoclopramide promotes gut motility by inhibiting presynaptic and postsynaptic D2 receptors as well as presynaptic 5-HT4 receptors. (B) Metoclopramide also produces antiemetic effects by inhibition of D2 and 5-HT3 receptors in the CTZ.CTZ: Chemoreceptor trigger zone; GI: Gastrointestinal.Adapted from [30].