人体缺少维生素A会患        (   ) A.脚气病       B.夜

人体缺少维生素A会患          

A.脚气病       B.夜盲症       C.佝偻病      D.坏血病

答案

请分析:下表是健康人肾动脉中的血浆、肾小囊中的液体和尿液进行分析比较得到的如下数据。

主要成份

血浆中(/100毫升)

肾小囊中(/100毫升)

尿液中(/100毫升)

90

98

96

蛋白质

8.00

0.03

0.00

A

0.10

0.10

0.00

无机盐

0.72

0.72

1.10

B

0.03

0.03

1.80

⑴、表中A可能是_____________B可能是__________

⑵、血浆和肾小囊中液体变化,说明了肾小球的_______作用。

⑶、A物质在肾小囊中存在而在尿液中没有,说明肾小管具有_________作用。

⑷、尿检中发现红细胞和大量蛋白质,请推测可能出现病变的部位是_______

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