In some ways, it’s very realistic! Like Fovea, one of my jobs as the receptionist was to order body parts. Unlike an anatomy lab, a surgery lab only needs one specific part at a time. Just like the heads in the book, the parts would come frozen, and we’d defrost them so they could be used. Unlike the heads in the book, none of them ever talked to me.
Another way that it’s not realistic is that there’s no such things a storefront cadaver lab. I made that up. My lab, like a lot of cadaver labs, was part of a medical school.