【单选题】【消耗次数:1】
组织性缺氧导致细胞缺氧的机制是
动脉血氧分压降低
血液氧饱和度降低
组织利用氧障碍
毛细血管血液量减少
血液氧容量降低
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相关题目
【单选题】 血液性缺氧导致细胞缺氧的机制是
①  动脉氧分压降低
②  单位时间内毛细血管血量减少
③  血氧容量降低
④  静脉血氧含量增高
⑤  细胞内呼吸障碍
【单选题】 低张性低氧血症引起组织缺氧其动脉血氧分压须低于
①  12.0 kPa (90mmHg)
②  10.7 kPa (80mmHg)
③  9.3 kPa (70mmHg)
④  8.0 kPa (60mmHg)
⑤  6.7 kPa (50mmHg)
【单选题】 血液性缺氧时
①  血氧容量正常、血氧含量降低
②  血氧容量降低、血氧含量正常
③  血氧容量、血氧含量均正常
④  血氧容量、血氧含量均降低
【单选题】 某患者的血氧检查结果,血氧容量20ml%,动脉血氧含量15ml%,动脉血氧分压6.7 kPa (50mmHg),动静脉氧差4ml%,其缺氧类型为
①  低张性缺氧
②  血液性缺氧
③  循环性缺氧
④  组织性缺氧
⑤  混合性缺氧
【单选题】 低张性缺氧导致细胞缺氧的机制是
①  静脉氧分压降低
②  静脉血液氧饱和度降低
③  毛细血管平均氧分压降低
④  毛细血管血量减少
⑤  血氧容量降低
【单选题】 循环性缺氧导致细胞缺氧的机制是
①  动脉氧分压降低
②  单位时间内毛细血管血量减少
③  血氧容量降低
④  血液氧饱和度降低
⑤  P50 降低
【简答题】 毛细血管血液通过组织气体交换后变为[填空(1)]。
【单选题】 血液在毛细血管内流动的线速度比在微动脉内的慢,这是因为毛细血管的
①  口径较小
②  管壁较薄
③  血压较低
④  总横截面积大
⑤  可扩张性较大
【单选题】 血液在毛细血管内流动的线速度比在微动脉内的慢,这是因为毛细血管的
①  口径较小
②  管壁较薄
③  血压较低
④  总横截面积大
⑤  可扩张性较大
【单选题】 下列哪种物质导致的缺氧不属于组织性缺氧
①  A、硫化氢
②  B、亚硝酸盐
③  C、砷化物
④  D、氰化钾
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