Centaur Skulls? (Patreon)

I'm trying to figure out how centaur heads look on the inside and I'm. Dying, squirtle

So far I think what I'm going for with the neck and head joint is something like wrist bones, with a lot of cartilage. Drawing guts stuff for aliens is tough because everything is layered on top of each other and there's only so much you can portray at once with lines and colors.