How Many Muscles Make Your Smile?

Book excerpt: Muscles do a lot more than make people strong. They help people move and can even keep them warm. The human body depends on muscle to survive. The exciting question-and-answer format of this book touches on many incredible facts about muscles and how they work in the human body, ensuring that readers will come away with a better understanding of this essential elementary science topic. Important biology and health concepts are brightly illustrated on each page. Readers will love learning about how to keep their own muscles fit and healthy.