Now, remember those tiny myofibrils that bundle up to form your muscle fibers?
,记得那些肌原维捆绑形成你肌肉维吗?
Thousands of tiny, parallel threads called myofibrils squish together to form muscle fibers, which are your actual muscle cells — cells with mitochondria, multiple nuclei, and a cellular membrane called a sarcolemma.
数以千计被称为肌原维平行线挤压一起形成肌肉维,这就是你真正肌肉细胞——具有线粒体、多个细胞核和称为肌膜细胞膜细胞。
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