The nuclear membrane, also known as the nuclear envelope, does not "return" in the same way that something might physically come back. It's a dynamic structure that breaks down during mitosis (cell division) and reforms afterward.

Here's a breakdown:

* During prophase (early stage of mitosis): The nuclear membrane starts to fragment. The proteins holding it together break down, and the membrane disassembles into small vesicles.

* During telophase (late stage of mitosis): As the chromosomes separate and move to opposite poles, the nuclear membrane reforms around each set of chromosomes. Vesicles containing membrane material fuse together to recreate the intact nuclear envelope.

So, the nuclear membrane doesn't "return" but rather reforms after its breakdown during mitosis. This process is crucial for ensuring that each daughter cell receives a complete set of chromosomes enclosed within a functional nucleus.