附肢骨(appendicular skeleton)脊椎动物成对的附肢的骨骼,陆生脊椎动物的四肢和鱼鳍有很大的区别:鱼类的鳍是单支点的杠杆,只能依着躯体作相对应的转动,而陆生脊椎动物的四肢是多支点的杠杆,不仅整个附肢可以依躯体作相对应的转动,而且附肢的各部彼此也可以作相对应的转动,既坚固又灵活,适于载重和沿地面行动。
...头骨,脊柱,肋骨(二)骨骼(skeleton)硬骨鱼的骨骼结构(2)头骨(skull):分为脑颅和咽颅软骨鱼的头骨(3)附肢骨(appendicular skeleton)由带骨和鳍..
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对嘉陵江科鱼类脊柱及附肢骨骼的比较表明,复台椎骨由前6权脊椎骨愈合而成。
The comparison of vertebral column and appendicular skeleton for bagrid catfishes from Jialing River reveals that in the family Bagridae the compound vertebra is formed by the anterior 6 vertebrae.
例如,1919年,在加拿大温哥华岛附近捕获了一条座头鲸,它有一对长达1米多的腿状附肢,还有完整的整套肢骨。
In 1919, for example, a humpback whale with a pair of leglike appendages over a metre long, complete with a full set of limb bones, was caught off Vancouver Island in Canada.
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