题目内容
形成心室肌动作电位平台期的主要离子流
查看答案
搜索结果不匹配？点我反馈
更多问题
蛙心插管的操作步骤包括：①剪断主动脉左右分支，②在主动脉干下方引线2根，③在心室收缩期插入插管，④在静脉窦与腔静脉交界处结扎，⑤结扎主动脉干上端。正确的操作顺序是：
制备离体工作心脏进行灌流实验，所需的器械
往离体工作蛙心灌流液中加入2滴3%CaCl2，可观察到心肌出现强直收缩
[音频]Andy and Donna are good friends. Donna is recovering from a 1 (bike, car, bus) accident and she still feels rather 2 (sick, weak, sad) now. Andy comes to see Donna. Donna gives her heart-felt thanks to Andy for sending her a 3 (gift, thank-you, get-well) card the day before. She thinks that Andy is very 4 (careful, thoughtful, helpful). She also expresses her love for the beautiful flowers Andy has brought her. These flowers are from Andy's 5 (niece's, father's, sister's) garden. They are so fresh and look so nice. Donna keeps them right on the 6 (desk, counter, table) beside her bed. When it's time to say goodbye, Andy asks Donna to 7 (take a rest, take care, take leave).
微信支付 
支付宝支付