【判断题】【消耗次数：1】
细胞一次兴奋后，兴奋性最低的是超常期。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
神经细胞在接受一次阈上刺激后，兴奋性周期变化的顺序是
①
相对不应期—绝对不应期—超常期—低常期
②
绝对不应期—相对不应期—低常期—超常期
③
绝对不应期—低常期—相对不应期—超常期
④
绝对不应期—相对不应期—超常期—低常期
⑤
绝对不应期—超常期—低常期—相对不应期
【单选题】
关于兴奋性突触传递的叙述，哪一项是错误的（）
①
突触前轴突末梢去极化
②
Ca<sup>2+</sup> 进入突触前膜内
③
Na<sup>+</sup> 进入突触前膜内
④
突触后膜对Na<sup>+</sup> 、K<sup>+</sup> ，特别是对Na<sup>+</sup> 的通透性增高
⑤
突触后膜去极化达阈电位时，突触后神经元发放冲动
【单选题】
兴奋性突触后电位与抑制性突触后电位的共同特征是
①
突触前膜均去极化
②
突触后膜均去极化
③
突触前膜释放的递质性质一样
④
突触后膜对离子通透性一样
⑤
产生的突触后电位的最终效应一样
随机题目
【单选题】
Hi, Sam, I think you did a good jo@@
①
Thank you
②
Don’t mention it
③
Not at all
④
I did it quite badly
【单选题】
We are interested in the weather because it __________ us so directly --- what we wear, what we do, and even how we feel.
①
benefits
②
affects
③
guides
④
effects
【单选题】
If the whole program __________ beforehand, a great deal of time and money would have been lost.
①
was not planned
②
were not planned
③
would not be planned
④
had not been planned
【单选题】
She’s an only child, but they didn’t really __________ her.
①
hurt
②
damage
③
spoil
④
harm
【单选题】
I was stunned by the news, and my initial __________ was anger.
①
impression
②
reaction
③
comment
④
other
【单选题】
Do you mind telling me where you’re from?
①
Certainly. I’m from London
②
Sure. I was born in London
③
Not really, you can do it
④
Certainly not. I’m from London
【单选题】
It was not until she had arrived home __________ remembered her appointment with the doctor.
①
when she
②
that she
③
and she
④
she
【单选题】
If only he __________ what I tell him, but he won’t.
①
had done
②
would do
③
would have done
④
has done
【单选题】
I am very grateful to you for what you’ve given me and __________ you have done for me.
①
which
②
that
③
all what
④
all that
【单选题】
Did Tom tell you to water the flowers?
①
No. And so did I
②
No. And neither did I
③
He did And so I did
④
He did And so do I