桡骨
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(桡(ráo )骨(gǔ ),桡(ráo )骨(gǔ ))
人(rén )和(hé )嵴(jí )椎(zhuī )动(dòng )物(wù )(四(sì )足(zú )类(lèi ))前(qián )臂(bì )两(liǎng )长(zhǎng )骨(gǔ )之(zhī )一(yī )。与(yǔ )尺(chǐ )骨(gǔ )并(bìng )排(pái ),位(wèi )于(yú )拇(mǔ )指(zhǐ )一(yī )侧(cè )。上(shàng )端(duān )与(yǔ )尺(chǐ )骨(gǔ )、肱(gōng )骨(gǔ )构(gòu )成(chéng )肘(zhǒu )关(guān )节(jiē ),下(xià )端(duān )与(yǔ )腕(wàn )骨(gǔ )构(gòu )成(chéng )腕(wàn )关(guān )节(jiē )。
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