如图是人体屈肘动作图请据图回答下面问题1人的运动系统是由骨骼和肌肉组成的.2一块骨骼肌是由两部分组成的�是肌腱�是肌腹.3 Template




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tomski如图是人体屈肘动作图请据图回答下面问题1人的运动系统是由骨骼和肌肉组成的.2一块骨骼肌是由两部分组成的�是肌腱�是肌腹.3 coloring