Human body

Your heart pumps blood constantly through 60,000 miles of blood vessels. Together, the heart, blood, and blood vessels make up the circulatory system. This system delivers oxygen from your lungs to the cells and organs of your body, and helps remove waste products. Readers explore the circulatory system with the aid of numerous photographs and revealing illustrations. This volume also includes information about disorders and diseases of the circulatory...

Inside this guidebook to the muscular system, readers will learn about the different kinds of muscles and how they function. From your eyes to your toes, muscles help you get things done every day. They help you grab, lift, push, pull, swing, and twist. The muscular system is made up of three different kinds of muscles. Many muscles move by thinking about the movement. Others work constantly without us thinking about them, and these muscles help keep...

Your respiratory system is working with each breath in and out. But it's more complex than just breathing. The information inside this book covers the structure and function of the respiratory system, as well as the importance of maintaining healthy lungs. The air that enters our lungs when we breathe in contains oxygen, which our bodies need to help turn food into energy. When we breathe out, carbon dioxide is removed from the body. Colorful photographs...

Presents an overview of the skeletal system, including key parts of the system and their jobs, how to keep the system healthy, and fun facts. Basic biology fascinates children, and each book in this kid-friendly collection begins with an engaging narrative to examine intriguing scientific questions. The following sections use a straightforward question-and-answer approach alongside colorful photos and illustrations to explain organs and systems of...