My Gastro Intestinal Tract

And this is the "bulb." I actually don't know what this is, but I assume it isn't referring to the light bulb I used to swallow as a part of a circus act. I think this is just inside my intestines, just past that valve. I'm assuming some M.D. pal of mine will correct me on this if necessary.

No, this isn't the anus of a wet, shaved monkey. I hope. Instead, it is the valve at the bottom of my stomach, behind which is the top of my intestines. WOW!!

This is the actual Shatzki's Ring (aka Schatzki's Ring) before it is widened. I wish there was a little ruler to get a sense of scale, but I guess we'll have to pretend that hole is around 3/4 of an inch across.

So, this is the back of my mouth. That hole in the back is my windpipe, and the glossy grey area in front of that is my esophagus. Apparently. Isn't this fun?