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【单选题】

Vitamin D is necessary for health and growth.It is used by the body to form.strong bones and teeth.That is why growing children need it.
Vitamin D is also called the sunshine vitamin.It forms when the skin is exposed to the sun.In the past people Blew what vitamin D was they learned that sunshine was important.Poor children lived in crowded slums (贫民窟).And they were often ill with tickets (软骨病) .In Englad a tax was once placed on windows.Builders put few windows in houses.Rickets became so common that it was called the English disease.
Because s have reached full growth, they probably__________.

A.
need as much vitamin D as children
B.
need less vitamin D than children
C.
need more vitamin D than children
D.
need no vitamin
题目标签:软骨
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参考答案:
参考解析:
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【单选题】软骨的再生起始于:

A.
以上全不是
B.
软骨膜的增生
C.
软骨母细胞
D.
成纤维细胞
E.
软骨细胞

【单选题】软骨发育不全是一种不完全显性遗传病()

A.
杂合子的表型与显性纯合子一样
B.
杂合子的表型与隐性纯合子一样
C.
杂合子的表型介于纯合显性与纯合隐性之间
D.
杂合子的表型接近于显性纯合子

【多选题】男性,7岁。出生后即发现右侧外耳畸形,无外耳道,为求改善外观、重建外耳,要求手术治疗。检查:右侧耳部组织明显小于左侧,仅存部分耳垂及耳轮,可扪及残留软骨,无耳廓,外耳道闭锁,未见外耳道口。听力较左耳明显减弱。右侧耳后区皮肤未见异常,双侧乳突区无明显压痛。注水扩张时,正确的做法是()

A.
注水扩张宜早不宜晚,可于术后5~7天开始注液
B.
采用亚速扩张(亚急性扩张):2~3天注水1次,3~4周完成扩张
C.
如果注射后表面皮肤变白,充血反应消失,等待5~10分钟后血流仍不恢复,则要回抽部分液体
D.
注射液体一般用抗生素生理盐水
E.
每次注射量为扩张囊容积的30%]
F.
每次扩张前后注水进针部位需消毒

【单选题】关节 面软骨多为 ( )

A.
纤维软骨
B.
透明软骨
C.
弹性软骨
D.
上述都不是