42.有關心肌放鬆的機制,下列敘述何者正確? (A)鈣幫浦(pump)將鈣離子..-阿摩線上測驗
42.有關心肌放鬆的機制,下列敘述何者正確?
(A)鈣幫浦( pump)將鈣離子打回細胞核
(B)鈉鉀幫浦( pump)將鈉離子移回細胞質,也將鉀離子移回橫小管(transverse tubule)內
(C)鈣幫浦( pump)將鈣離子打回肌漿網(sarcoplasmic reticulum)
(D)鈉鉀幫浦( pump)同時將鈉離子與鉀離子移到細胞外
最佳解! | ||
2F 宗翰 大三下 (2024/06/21)
出自: Human Anatomy and Physiology THIRD EDITION p.626、627
有關心肌放鬆的機制,(C) 鈣幫浦( pump)將鈣離子打回肌漿網(sarcoplasmic reticulum)
About 20% of the calcium needed for the calcium pulse that triggers contraction enters from the extracellar space and, once inside, it stimulates the release of much larger amounts of Ca2+ (the remaining 80%) from the SR. .....During repolarization, calcium ions are pumped back into the SR and the extracellular space.... 查看完整內容 |