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骨骼肌细胞中横管的功能是：

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骨骼肌细胞中横管的功能是：

A.Ca2+的贮存库

B.Ca2+进出肌纤维的通道

C.营养物质进出肌细胞的通道

D.将兴奋传向肌细胞深部

E.使Ca2+和肌钙蛋白结合

参考答案:

答案：D

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