Oxygen is one of the most essential needs for life on Earth, and respiration is how living things use it. But there's a lot more going on in this seemingly simple process than you might think. The respiratory system is in some ways the most underappreciated of the body systems, since it works 24/7, mostly without being noticed, and never gets a single moment's rest. In this book, readers discover the most fascinating facts about respiration, the structure of the lungs, and even some of the seemingly gross processes that happen in their body!

Oxygen is one of the most essential needs for life on Earth, and respiration is how living things use it. But there's a lot more going on in this seemingly simple process than you might think. The respiratory system is in some ways the most underappreciated of the body systems, since it works 24/7, mostly without being noticed, and never gets a single moment's rest. In this book, readers discover the most fascinating facts about respiration, the structure of the lungs, and even some of the seemingly gross processes that happen in their body!

Have you ever wondered how the brain is able to control so many important things in the human body? Or how the spinal cord is structured? This volume engrosses and engages reader in this fascinating topic in an easy-to-follow format that adds to the accessibility of this text. Graphic organizers, a body system diagram, and full-color photographs reinforce the science curriculum content contained in each fun fact. Even reluctant readers will marvel at all the amazing processes of the nervous system when explained through gross, unbelievable, and amusing tidbits on each page.

Muscles do far more than help us lift heavy things off the ground. Muscles make the heart work well and move food through the stomach. They allow us to walk, swim, and even draw! In the fun fact file format, this book introduces readers to the most interesting aspects of the muscular system, including information from the science curriculum, through engaging and sometimes gross tidbits! Detailed diagrams and full-color photographs support each fascinating fact, guiding readers to better body literacy and understanding of this important body system.

Readers will bone up on their knowledge of the human body with this enlightening text about the skeletal system. The skeleton forms framework for the entire body. It protects the organs, stores minerals, and makes it possible for the body to move and function. Readers will study the parts of the skeletal system, learn about types of bones, and discover how the body changes over time. Useful diagrams help readers visualize abstract concepts, and attention-grabbing photographs enrich the comprehensive text.

When talking about the digestive system, a few topics must be covered: vomit, the intestines, and poop! All readers can enjoy these and many more topics about the grossest of the body systems in this friendly, fun fact format. From the mouth and esophagus to the small and large intestine, readers take a journey through the human body via the digestive tract, and enjoy learning about processes the digestive system does without us even knowing. The bright images and labeled diagrams encourage body literacy and support science classroom learning.

Did you know all the air you breathe in passes through a special filtration system? It is one of the many ways the respiratory system keeps your body running smoothly! In this title, leveled text explains how the respiratory system works both inside and outside the body while vibrant photos and diagrams keep young readers engaged.