【判断题】随着学前儿童神经系统发育的不断完善,3-4岁的幼儿能够很容易画成直线。
【简答题】当骨骼肌细胞膜受刺激,局部产生去极化达到阈电位水平时,则________被激活,使膜对_________的通透性突然增大,从而形成了动作电位。
【单选题】阈电位是指
B.
造成细胞膜对Na+通透性开始增大的临界膜电位
D.
造成细胞膜对Na+通透性突然增大的临界膜电位
E.
造成细胞膜对Na+、K+通透性突然增大的临界膜电位
【简答题】Create a new product which you think will be popular amongst your classmates. You should: (1) give a name to the product; (2) describe the product briefly; (3) the reasons you think why it will be pop...
【简答题】Do you agree to the ideas about the reasons for poverty in the video? Give your reasons .
【单选题】动作电位产生过程中,去极化达到阈电位水平膜的去极化和膜的通透性之间形成( )