
动物的协调与反应 1
Authored by Chem Bio L3
Biology
12th Grade
Used 14+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如图表示人体的某反射弧模式图,请根据图判断下列叙述正确的是
图中1是神经中枢,2是传出神经,3是传入神经
刺激2时,会产生具体效应的结构是5
结构4在组成上包括传出神经末梢及其所支配的肌肉与腺体等
刺激3时,能产生兴奋的结构是34125
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下列关于兴奋在神经纤维上的传导过程和特点的说法,不正确的是
神经纤维兴奋部膜外为负电位,膜内为正电位
兴奋在神经纤维上即可双向传导,也可单向传导
兴奋传导时,膜内电流方向与兴奋传导反向相反
动作电位产生时Na+ 流入神经细胞内的过程不需要消耗大量能量
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下图表示枪乌贼离体神经纤维在Na+浓度不同的两种海水中受到刺激后的膜电位变化情况。下列描述中错误的是
曲线a代表正常海水中膜电位的变化
两种海水中神经纤维的静息电位相同
低Na+海水中神经纤维静息时,膜内Na+浓度高于膜外
正常海水中神经纤维受到刺激,膜外Na+浓度高于膜内
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
关于神经兴奋的传导,下列叙述正确的是
神经纤维兴奋时,电位变为“外正内负“
兴奋在神经纤维上只能从细胞体传向轴突
兴奋可以从一个神经元的树突传至另一个神经元的轴突
突触小体释放递质时电信号转变成化学信号
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下列关于神经冲动的传导,叙述正确的是
静息状态时,神经纤维膜电位为外负内正
在反射弧中,神经冲动可双向传导
突触前膜释放的神经递质,一定引起突触后膜兴奋
神经冲动的传导需要消耗能量
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
神经冲动在两个神经元之间传递时,以下生理活动不会发生的是
生物膜的融合和转化
信号分子在组织液中的扩散
突触前膜对神经递质的主动运输
离子通道的开放和关闭
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
某些麻醉剂是神经递质的阻断剂,当人体使用这些麻醉剂后痛觉消失了,而其它大部分神经的传递功能正常。这一事实说明
该麻醉剂将作用于突触后膜
不同神经元之间的递质可能不同
一个神经元细胞可释放多种递质
麻醉剂能作用于大脑皮层,使人意识模糊
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