Answer:
I think you live beneath a roof that is upheld by me; I think you seldom walk abroad but my fair form you see; I close you in on every side you very dwelling pave and probably I'll go with you At last into the grave.
I am easy to waste and unstoppable. What am I?
I need to be taken from you before you can have me.
I plow and plow, but never sow. What am I?
I can be swallowed But I can also swallow you.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.