The striated and polished surfaces are called slicken-sides.
有条痕磨光面则称为擦痕面。
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Like skeletal muscle fibers, cardiac muscle cells have striations. Like smooth muscle fibers, each cardiac muscle cell has only one nucleus and its contraction and relaxation are not under conscious control. Therefore, it is also called involuntary striated muscle.
像肌纤维一样,心肌细胞也有条纹。像平滑肌纤维一样,每个心肌细胞只有一个核而且其收缩和舒张不受意识控制。因此,它也被称为非随意横纹肌。