Book excerpt: "What is the most complex machine on earth? The human body! With Inside the Human Body, we'll peel back the layers to take a look inside this amazing machine and learn the basic anatomy of the human body and its bones, muscles, blood vessels, nerves, and organs. STEM activities, text-to-self and text-to-world connections, links to online resources, and fascinating trivia make learning applicable and fundamental."--Provided by publisher.