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异凹型椎体
时间:2021-09-04 02:26
关键词:
脊椎动物
生物学
答案解析
<p> 仅存在于鸟类的颈椎(环椎、枢椎除外)中,颈椎椎骨之间的关节面呈马鞍形,把这种椎体称为异凹型椎体,它使椎骨之间的运动十分灵活。</p>
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异凹型椎体
最新问题
椎体为双凹型,其中有残存脊索的动物是()。?
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鸟类颈椎椎骨之间的关节面呈马鞍形,称异凹型椎体,第一枚为枢椎,第二枚为寰椎。()
脊椎骨病变,骨密度减低,骨皮质变薄,哈弗斯管扩张,骨小梁稀疏,椎体呈栅栏状改变,椎体双凹变形,甚至椎体压缩性骨折,应当是()
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