课程代码：10063

一、单项选择题(本大题共30小题，每小题1.5分，共45分)

在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在题后的括号内。错选、多选或未选均无分。

1．不属于脑干结构的脑组织是(      )

A.间脑                                                             B.中脑                        

C.脑桥                                                             D.延髓

2．没有自主神经分布的组织是(      )

A.心肌                                                             B.平滑肌                     

C.骨骼肌                                                         D.腺体

3．第一心音标志(      )

A.心室收缩的开始                                           B.心室舒张的开始       

C.心房收缩的开始                                           D.心房舒张的开始

4．下列哪类心肌细胞无自动节律性？(      )

A.心室肌                                                         B.窦房结                     

C.房室结                                                         D.房室束

5．心室肌的后负荷是指(      )

A.心房压力                                                      B.大动脉血压              

C.心室收缩末期压力                                        D.心室舒张末期压力

6．正常人血浆pH值为(      )

A.7.15～7.25                                                    B.7.25～7.35               

C.7.35～7.45                                                    D.7.45～7.55

7．体内O2分压最高的部位是(      )

A.肺泡气                                                         B.动脉血                     

C.静脉血                                                         D.组织

8．呼吸的基本中枢位于(      )

A.脊髓                                                             B.延髓                        

C.脑桥                                                             D.中脑

9．分泌内因子的胃腺细胞是(      )

A.主细胞                                                         B.壁细胞                     

C.黏液颈细胞                                                  D.幽门腺细胞

10．下列哪项不是胰液中的成分?(      )

A.胰脂肪酶                                                      B.胰蛋白酶                 

C.胰淀粉酶                                                      D.胰岛素