【单选题】
循环血量增加，抗利尿激素释放 ，尿量 ___
A. 不变 减少
B. 减少 增多
C. 增多 减少
D. 减少 减少
E. 增多 增多
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答案
B
解析
暂无解析
相关试题
【单选题】
抗利尿激素分泌调节的描述，错误的是___
A. 大量出汗、呕吐、腹泻可导致合成和释放增多
B. 大量饮水可导致合成和释放减少
C. 循环血减少可导致合成和释放增多
D. 血钾升高可导致合成分泌增加
E. 循环血量增加可导致合成和释放减少
【单选题】
下列两种离子浓度变化，哪种使醛固酮分泌增多___
A. 血K+增加，血Na+增加
B. 血K+增加，血Na+减少
C. 血K+减少，血Na+减少
D. 血K+减少，血Na+增加
E. 血K+增加，血Na+不变
【单选题】
已知碘锐特在流经肾循环后可被完全清除，肾静脉中该物质 浓度为零。给某人静脉滴注碘锐特后肾脏每分钟可将 660ml 血浆中的碘锐特完全清除，该数值等于___
A. 肾小球滤过率
B. 肾血流量
C. 肾血浆流量
D. 肾小管分泌率
E. 肾小管重吸收率
【单选题】
经测定某患者的尿素清除率为 70ml/min，菊粉清除率为 125ml/min，两者有差异表明该患者 ___
A. 肾功能减退
B. 肾小球滤过率降低
C. 肾小管可以吸收尿素
D. 肾小管重吸收功能降低
E. 肾小管重吸收功能增强
【单选题】
某外伤患者大出血后血压降低到 60/40mmHg,尿量明显减少的原因主要是 ___
A. 肾小球毛细血管压降低
B. 肾小囊内压升高
C. 肾血浆胶体渗透压增高
D. 滤过膜面积减小
E. 滤过膜通透性降低
【单选题】
心室肌细胞动作电位各个时期跨膜电位的变化有：①去极过程；②平台期；③复极；④1期复极；⑤静息期。其顺序应为：
A. ①②③④⑤
B. ①③④⑤②
C. ①④⑤②③
D. ①⑤②③④
E. ①④②③⑤
【单选题】
浦肯野细胞和心室肌细胞的动作电位的主要区别是：
A. O期除去速度不同
B. 1期形成的机制不同
C. 平台期持续时间相差特别悬殊
D. 3期复极速度不同
E. 4期自动去极化
【单选题】
下面关于心肌Ca2+通道的描述，哪一项是不正确的：
A. 激活和失活的速度都很慢
B. 专一性较差，Na+和Ca2+都可通过
C. 通透性很高
D. 在去极化到一40mV时被激活
E. 能被Mn2+阻断
【单选题】
心肌细胞一次兴奋过程中，产生有效不应期的原因是：
A. Na+通道已基本上复活，处于可被激活的正常备用状态
B. Na+通道开放能力已达到最大限度
C. Na+通道完全失活或刚刚开始复活
D. Na+通道开放能力已恢复正常
E. Na+通道开放已逐渐复活，但其开放能力尚未恢复正常
【单选题】
室性期前收缩之后出现代偿间歇的原因是：
A. 窦房结的节律性兴奋延迟发放
B. 窦房结的节律性兴奋少发放一次
C. 窦房结的节律性兴奋传出速度大大减慢
D. 窦房结的一次节律性兴奋落在室性期前收缩的有效不应期中
E. 窦房结的节律性兴奋落在生性期前收缩的相对不应期中
【单选题】
心动周期中，心室血液充盈主要是由于：
A. 血液依赖地心引力而回流
B. 骨骼肌的挤压作用加速静脉同流
C. 心房收缩的挤压作用
D. 心室舒张的拙吸作川
E. 胸内负压促进静脉回流
【单选题】
心指数等于：
A. 每搏输出量X体表面积(m2)
B. 每搏输出量／体表面积(m2)
C. 心输出量X体表面积(m2)
D. 心率X体表面积／心输出量(m2)
E. 心率X每搏输出量／体表面积(m2)
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