The Skeleton and Muscles: An Owner's Guide

Every machine needs a framework, and that's where the skeleton and muscles of the human body come in!
Readers will learn how their amazing skeletal and muscular system holds them up and keeps them moving in this information-packed science handbook. Full of diagrams, how-it-works features, tips, troubleshooting guides, and frequently asked questions and answers, this must-have manual is the ultimate human body guide!