2 books · Ages 5–10 · Chapter Books
Dr. Frankenstein's Human Body is a 2-book series for ages 5–10 by Steve Alton. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Blood and Goo and Boogers Too! and Chewy, Gooey, Rumble, Plop! are great first picks.
No particular order needed — browse and pick what catches your eye.