通过多年实验教学获知,泥鳅是观察血流现象比较理想的材料。它不仅获取容易,而且生命力很强。为此我想谈谈关于观察泥鳅尾鳍血流现象应注意的六个问题。 1、泥鳅滑脱应如何防止将一块干纱布(30cm×25cm)的中心对着泥鳅头部轻轻地裹住,即头部被网住了。紧接着将余下的纱布沿着躯干部依次向下缠绕几圈,只露出尾部。忌用草纸布片裹体,以免影响泥鳅的呼吸以及损伤泥鳅躯体。 2、鳃处湿润应如何处置 Learning through years of experimental teaching, loach is an ideal material to observe the phenomenon of blood flow. It is not only easy to acquire, but also very viable. For this reason, I would like to talk about six issues that should be paid attention to in observing the phenomenon of blood flow in loach caudal fin. 1, Loach slippage should be how to prevent a piece of dry gauze (30cm × 25cm) gently wrapped in the head against the loach, that is, the head was net live. Followed by the rest of the gauze along the trunk followed by several turns down, exposing only the tail. Avoid using grass paper cloth wrap, so as not to affect the loach’s breathing and injury Loach body. 2, how to deal with the wet gills Department