Here is a link to a wonderful page that will explain the process of egg laying and where the egg comes from.
I was going to post the information on the blog but thought it may be just too much information for some. I was going to explain it myself but then, again, thought it may be too much information. The page does a much better job explaining than I ever could anyhow.
I saw Henrietta lay that big double yolker. It was really neat. I never saw the actual laying of an egg before. Very cool.