I was a wanna-be actor in Hollywood in 1965, going to acting classes in what I think was a Paramount studio space. One night, we happened to open a door in the corner of the studio, only to find ourselves in the middle of what I now know was the set for the inside of the body. Tubes, pipes, great big blobs of red and other nasty colors. This of course was intended to be secret, but we quickly learned that it was the set for an upcoming film, depicting the entire inside workings of the body. Cool- but no glimpse of Raquel Welch, which would have made this so-called actor very happy!