問題詳情

39.下列那些離子可經由神經元的NMDA型穀氨酸受體通道(glutamate receptor channels)進入細胞?
(A)鈣離子、氯離子
(B)鈣離子、鎂離子
(C)鎂離子、鋅離子
(D)鈉離子、鈣離子

參考答案

答案:D
難度:非常簡單1
統計:A(0),B(0),C(0),D(2),E(0)

用户評論

Fung Ching Yu】評論

ThenNMDAR is a specific type of ionotropic glutamate receptor. The NMDA receptor is so named because the agonist molecule N-methyl-D-aspartate (NMDA) binds selectively to it, and not to other glutamatenreceptors. Activation of NMDA receptors results in the opening of an ion channel that is nonselective to cations, with a combined reversal potential near 0 mV. While the opening and closing of the ionnchannel is primarily gated by ligand binding, the current flow through the ion channel isnvoltage dependent. Extracellular magnesium (Mg2+) and zinc (Zn2+) ions can bind to specific s...