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找根长骨研究一下,最外面这层薄薄的膜,就是骨膜。分布着许多血管和神经,血管是给骨头输送营养的管道,神经负责找FEEL,哎呦,这里好痛! 进主角,骨头主体的外层是结结实实、排列紧密的骨组织,像高密度的压缩板,这在医学上叫做骨密质。
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