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皖南医学院902生理学考研资料

  • 2026-09-20 21:53:00
皖南医学院902生理学考研资料

皖南医学院902生理学考研资料

本文为节选,源自攻关学习网,含真题/章节课后习题/答案解析/模拟考试(具体请查阅),每年进行更新。

参考资料:

全国名校生理学考研真题汇总

王庭槐《生理学》(第9版)配套题库【考研真题精选+章节题库】

......

部分资料摘录:

抗利尿激素( )。

A.是由神经垂体合成的一种激素

B.当血浆晶体渗透压升高时分泌增加

C.在循环血量显著减少时分泌减少

D.使远曲小管和集合管对水的通透性降低

【答案】B

【解析】抗利尿激素的分泌,受渗透压感受器和容量感受器的影响,血浆晶体渗透压升高时,渗透压感受器兴奋,ADH释放增加。容量感受器兴奋ADH释放减少。

下列因素中,刺激抗利尿激素分泌最强的是( )。

A.循环血量减少

B.血浆晶体渗透压增高

C.血浆胶体渗透压增高

D.饮大量清水

【答案】B

【解析】细胞外液渗透浓度的改变是调节血管升压素(抗利尿激素)分泌最重要的因素。当血浆晶体渗透压升高达血管升压素释放的阈值后,血浆晶体渗透压每升高1%,血管升压素浓度可升高1pg/ml。

下列哪种情况下可发生高血钾?( )

A.血容量减少

B.应用非保钾利尿剂

C.给予胰岛素处理

D.代谢性碱中毒

E.醛固酮分泌过多

【答案】A

【解析】A项,血容量减少使肾小球钾的滤过减少,因肾血流量不足使肾小管钾的分泌也减少,可导致高血钾。B项,非保钾利尿剂使尿量增加,钾排出增加。C项,胰岛素使细胞外的钾转入细胞内,不会引起高血钾。D项,在近端小管除有Na+-H+交换外,还有Na+-K+交换,两者之间是竞争性抑制关系。代谢性碱中毒时,小管液中H+减少,Na+-H+交换减少而Na+-K+交换加强,使血钾浓度降低。E项,醛固酮增加可促进钾的分泌,血钾浓度降低。

视近物时,眼的调节不包括( )。

A.晶状体变凸

B.悬韧带收缩

C.瞳孔缩小

D.双眼球会聚

【答案】B

【解析】A项,看近物时,睫状体紧张,悬韧带松弛使晶状体变凸,导致物像前移,成像在视网膜上。B项,看远物时,睫状体松弛,悬韧带紧张使晶状体变扁,导致物像后移,成像在视网膜上。C项,看近物时,可反射性引起双侧瞳孔缩小,称为瞳孔近反射(也称为瞳孔调节反射)。D项,眼球会聚是指双眼注视一个由远移近的物体时,两眼视轴向鼻侧会聚的现象。

感受器的适应现象表现在持续刺激条件下( )。

A.动作电位发放频率变慢

B.动作电位幅度变小

C.动作电位发放频率变慢,幅度变小

D.动作电位潜伏期延长

E.动作电位发放频率变快

【答案】A

【解析】感受器的适应现象是指当一个恒定强度的刺激作用于感受器时,虽然刺激仍在继续起作用,但其感觉传入神经纤维上的动作电位的频率已开始下降的现象。

关于腱反射的叙述,正确的是( )。

A.属于紧张性牵张反射

B.感受器是腱器官

C.高位中枢病变时反亢进

D.是多突触反射

【答案】C

【解析】牵张反射是指骨骼肌受到外力牵拉时引起受牵拉的同一肌肉收缩的反射活动,受高位中枢的调节,包括腱反射和肌紧张。腱反射是一种位相性牵张反射,感受器都是肌梭,属于单突触反射。肌紧张属于紧张性牵张反射,感受器都是肌梭,属于多突触反射。腱反射亢进提示高位中枢有病变。

电刺激下丘脑背侧区,动物会出现( )。

A.食欲亢进

B.逃避行为

C.防御性行为

D.攻击行为

【答案】B

【解析】下丘脑内存在防御反应区。对于清醒动物,电刺激下丘脑腹内侧区可出现防御性行为;电刺激下丘脑背侧区可出现逃避行为;电刺激下丘脑外侧区可出现攻击行为。

突触前抑制的发生是由于( )。

A.突触前膜释放抑制性递质

B.突触前膜兴奋性递质释放量减少

C.中间抑制性神经元兴奋

D.突触后膜超极化

【答案】B

【解析】突触前抑制在中枢内广泛存在,其发生机制是由于突触前膜Cl-电导增加,导致突触前膜动作电位减小,从而释放兴奋性递质减少。

……

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  1. CONNECT:[ UseTime:0.000694s ] mysql:host=172.18.0.4;port=3306;dbname=d_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000804s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000391s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000333s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000712s ]
  6. SELECT * FROM `set` [ RunTime:0.000329s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000697s ]
  8. SELECT * FROM `article` WHERE `id` = 463073 LIMIT 1 [ RunTime:0.000395s ]
  9. UPDATE `article` SET `lasttime` = 1789955815 WHERE `id` = 463073 [ RunTime:0.001291s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000391s ]
  11. SELECT * FROM `article` WHERE `id` < 463073 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000491s ]
  12. SELECT * FROM `article` WHERE `id` > 463073 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000400s ]
  13. SELECT * FROM `article` WHERE `id` < 463073 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000669s ]
  14. SELECT * FROM `article` WHERE `id` < 463073 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000585s ]
  15. SELECT * FROM `article` WHERE `id` < 463073 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000555s ]
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