on the "eww that's gross" level it looks like someones spine has just been removed. I'm guess closer to some sort of pasta in a red sauce. I think it could be a bit sharper and the image is a little too bright in the bottom right quarter. Nice job of getting up and personal.
I didn't know you were allowed to take pictures of people while they were being operated on. But whatever the case its great composition and lighting. :)
This looks like cooked pasta, the kind from a can. You titled it red but I don't see much red here. The light/flash is too harsh, the focus is not quite right and this does not look appealing, sorry.
ew [edit] you know I feel guilty about writing 'ew' even though it was honest. I should've written Ew! grossout! it looks like food made to look like some never-sees-the-light-of-day anatomical detail or something. I don't know if it's technically perfect or not, I can't look at it long enough to judge. I gave it a 4.