Best way to draw things i need to "slice"?

Hey hey everyone. A quick question. How would I go about to make something similar to the attached file (it is NOT mine. I’m NOT making any claim to it. It is just for reference, so that people can SEE what I’m talking about)?

I need to be able to make illustrations for medical brochures and then slice them up to show the inside. What would be best for this? I’m guessing some 3D animation prog. But maby (if i’m realy realy lucky) there is a prog out there that “helps” you to make these types of illustrations or a great website that has a HUGE stock of illustrations (i’ve done some searches, but non of them where that good).