【单选题】【消耗次数：1】
电镜下能看出周期性横纹的结构是：
①
神经原纤维
②
神经纤维
③
弹性纤维
④
胶原原纤维
⑤
平滑肌纤维
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相关题目
【简答题】
名词解释：神经纤维
【单选题】
传导慢痛的外周神经纤维是（）
①
A<sub>α</sub> 纤维
②
C类纤维
③
A<sub>δ</sub> 纤维
④
B类纤维
⑤
A<sub>γ</sub> 纤维
【单选题】
有髓神经纤维神经冲动的传导方式是（）
①
有一个结间体向另一个结间体跳跃式的传导
②
有一个郎飞结向另一个郎飞结跳跃式的传导
③
有一个髓鞘切迹向另一个髓鞘切迹跳跃式的传导
④
在轴膜上连续传导
⑤
在结间体上连续传导
【单选题】
下列关于神经纤维传导速度的描述，正确的是
①
直径越大，传导越慢
②
无髓鞘的神经纤维传导速度快
③
髓鞘越厚，传导越慢
④
一定范围内升高温度可加快传导
⑤
麻醉不影响传导速度
【单选题】
对于单根神经纤维来说，下述错误的是（）
①
电刺激可使其兴奋
②
阈刺激可引起动作电位
③
动作电位是“全或无”的
④
动作电位以局部电流形式传导
⑤
动作电位在同一细胞上传导时幅度逐渐减小
随机题目
【单选题】
the old couple decided to ____ a boy and a girl though they had three of their own.
①
adapt
②
bring
③
receive
④
adopt
【单选题】
I will count three hundred and not one of you ______ move a bit.
①
is to
②
are to
③
is
④
are
【单选题】
After a lot of difficulties, he _______ to open the door.
①
managed
②
succeeded
③
accomplished
④
tried
【单选题】
None of us expected the chairman to _____ at the party. We thought he was still in hospital.
①
turn in
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turn over
③
turn up
④
turn down
【单选题】
Thanks, you saved my daughter’s life!____________
①
Oh, I’m afraid I didn’t do well enough.
②
No problem.
③
I’m glad I could help.
④
It’s not necessary for you to say so.
【单选题】
All things ____, the planned trip will have to be called off.
①
considered
②
be considered
③
considering
④
having considered
【单选题】
It is better for you to be _____ about its consequences before you take any action.
①
positive
②
absolute
③
critical
④
favorite
【单选题】
The new apartment built a few months ago is large enough to _____ over two hundred people.
①
contain
②
provide
③
reside
④
accommodate
【单选题】
Shall we sit up here on the grass or down there near the water?_________
①
I’d rather stay here if you don’t mind.
②
Sorry, I don’t like neither.
③
Certainly, why not?
④
Yes, we like these two places.
【单选题】
Sandy could do nothing but _______ to his teacher that he was wrong.
①
admit
②
admitted
③
admitting
④
to admit