Answer:
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
What has three ways out and just one way in?
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breath on this terrestrial ball.
Has no feet, but travels far. Is literate, but not a scholar. Has no mouth, yet clearly speaks.
Some women don't like to be called that, yet every woman wants one. It cries and makes a lot of noise, but smiles and gurgles when you give it toys.