Cisterna (pl. cisternae) A flattened membrane-bounded sac of the endoplasmic reticulum or the Golgi apparatus, being the basic structural unit of these organelles.

• 潴泡（池，槽库）：在内质网或高尔基体中存在的扁平的膜状囊泡，是这些细胞器的基本结构单位。