Answer:
It rows quickly with four oars but never comes out from under its own roof. What is it?
I may be of the eye, in order I am pie. In my center there is a star, I keep medics where they are. What am I?
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
What jumps when it walks, but sits when it stands?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.