Answer:
I can be in your body but never on your placemat. I'm always better when I'm fresh, but you'll never see me in the flesh. What am I?
I am a table you can eat. What am I?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
I begin and have no end. Eventually I will be the end of all that has begun.
I will disappear every time you say my name.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.