内质网(ER)是膜状细胞器官，开始于细胞核，参与蛋白质合成。 这些合成的蛋白质将被运送到高尔基体。

...where it fuses with the vesicles originating from the Golgi body. They contain the enzymes needed for the digestion.

The vesicle travels into the cell...

The cell engulfs a food particle so that it forms a cell membrane vesicle around it.

来自虚拟现实世界的场景图片：

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该消化过程中，细胞获取有用物质，并排出废物。