【多选题】【消耗次数：1】
维生素D缺乏在人体的表现有()
①
婴幼儿发生佝偻病
②
在青年人发生骨质疏松症
③
在儿童发生癞皮病在
④
在成人发生骨质软化症
⑤
在老年人发生痤疮
参考答案：
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相关题目
【单选题】
佝偻病的发生是由于缺乏（ ）．
①
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②
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③
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④
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随机题目
【单选题】
72．肺导气部的各种管道中，管壁出现杯状细胞、腺体及软骨片均消失，平滑肌增多等特点
的是
①
A．叶支气管
②
B．段支气管
③
C．小支气管
④
D．细支气管
⑤
E．终末细支气管
【单选题】
15．心脏的大体解剖结构是
①
A．心腔分为右心房、左心房及右心室、左心室。心壁分为心外膜、，心肌和心心膜
②
B．心传导结构包括窦房结、房室结、房室束：房室束左右脚及其末端形成的浦肯野氏
纤维
③
C．全身静脉血经由右心房、右心室、肺动脉(含静脉血)流人肺，交换气体后，通过
肺静脉(含动脉血)流人左心房、左心室，再通过主动脉流往全身各组织器官．
④
D．心脏的营养血管是冠状动脉、心大中小静脉
⑤
E．以上都是