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【判断题】

A bipolar neuron is one that has two neurites that emerge together from the cell body. 双极神经元的两个神经突起从胞体一起发出。

A.
正确
B.
错误
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参考答案:
参考解析:
.
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【单选题】In a purely biological sense, fear begins with the body’’s system for reacting to things that can harm us—the so-called fight-or-flight response. "An animal that can’’t detect danger can’’t stay alive...

A.
reactions of humans and animals to dangerous situations are often unpredictable
B.
memories of significant events enable people to control fear and distress
C.
people’’s unpleasant memories are derived from their feelings of fear
D.
the amygdala plays a vital part in human and animal responses to potential danger

【多选题】下运动神经元病变时见到的体征是

A.
Babinski征阳性
B.
肌张力降低
C.
肌张力升高
D.
腱反射消失
E.
腱反射亢进

【单选题】下述有关运动神经元病的表述中不正确的是()

A.
上、下运动神经元损害可同时并存
B.
家族性少见
C.
锥体束变性从高位脊髓向下或向上发展
D.
括约肌功能通常受影响
E.
可出现延髓麻痹

【单选题】双极神经元具有

A.
一个轴突和多个树突
B.
一个轴突和一个树突
C.
一个树突和两个轴突
D.
一个轴突和两个树突
E.
多个轴突和一个树突

【单选题】神经元尼氏体在电镜下为()

A.
溶酶体
B.
粗面内质网和游离核糖体
C.
线粒体
D.
高尔基复合体