下列属于长骨的是（ ）。
- A.肋骨
- B.椎骨
- C.桡骨
- D.枕骨
正确答案及解析
正确答案
解析
A项:扁骨多呈板状，富于弹性与坚固性，主要构成骨性腔的壁，对腔内器官起到保护作用。 如颅骨部位的顶骨、枕骨和胸部的肋骨等。
B项:髋骨、椎骨、颞骨等属于不规则骨。
C项：长骨形体较长而坚硬，分布于人体四肢，在运动中起杠杆作用。长骨多呈管状，内含空腔，有骨髓，如股骨、胫骨、肱骨、尺骨、桡骨、指骨等。
D项:扁骨多呈板状，富于弹性与坚固性，主要构成骨性腔的壁，对腔内器官起到保护作用。 如颅骨部位的顶骨、枕骨和胸部的肋骨等。
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