Is the urethra part of the male reproductive system? Is it part of the female reproductive system?

The urethra is part of the male . But it is not part of the female reproductive system. The urethra is a part of BOTH the female and male .

Take a look at the diagram below:

At any one time, the urethra can either pass urine OR contract to pass the sperm out.

Here are the female reproductive and excretory diagrams:

So urine passes through the urethra, and is separate from the vagina.

Well, hope this helps :)