Sonogram images of my niece Hannah

Here are some of the latest sonogram images of Hannah, my soon-to-be new niece -- my sister Donna is due on August 21, so it won't be long!

Perhaps some of the medical students, physicians and mothers in clan Foster can describe to me what exactly we're looking at in these images...the spine is pretty obvious, but even with the text descriptions I'm having a hard time making heads or tails (literally!) of any of the others.