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一、单选题（共 50 道试题，共 100 分。）

1. 第1、2蚓状肌是由哪一神经支配：

A. 尺神经深支

B. 正中神经

C. 桡神经深支

D. 骨间前神经

E. 桡神经浅支

正确答案：B

2. 板层Ⅶ

A. 位于脊髓灰质侧角

B. 内有中间内、外侧核和网状核

C. 中间内侧核接受内脏感觉纤维

D. 中间外侧核居于外感受区

E. 以上都不对

正确答案：C

3. 十二指肠：

A. 为腹膜外位器官

B. 全部由腹腔动脉分支供血

C. 只接受胃液和胆汁注入

D. 呈“C”形包绕胰头

E. 以上全错

正确答案：D

4. 上颌窦：

A. 在上颌骨体内

B. 窦顶为额骨眶部

C. 底与尖牙关系密切

D. 窦口低于底部

E. 开口于下鼻道

正确答案：A

5. 使足外翻的肌肉是：

A. 胫骨前肌

B. 腓肠肌

C. 长屈肌

D. 腓骨长肌

E. 胫骨后肌

正确答案：D

6. 交感神经兴奋时：

A. 瞳孔开大

B. 心跳加快，血压下降

C. 支气管平滑肌收缩

D. 胃肠蠕动加快

E. 冠状动脉收缩

正确答案：A

7. 关于输尿管的正确描述是：

A. 起于肾大盏，终于膀胱

B. 分为腹盆两部分

C. 有两个狭窄

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