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!

The respiratory system is the breathing control center of the body. With engaging text, fun facts, and infographics, learn how oxygen goes from your lungs to your cells.

Did you know the average adult takes 12 to 20 breaths per minute when not doing physical activity? Adults take between 17,000 and 23,000 breaths per day. Discover more fascinating facts in Respiratory System, a title in the Body Systems series. Each title in Body Systems guides readers through the fascinating inner workings of the human body. The human body contains several complex systems that work closely together to support life and allow the body to function properly. Each book explores the characteristics and interactions of these systems, their makeup, and their importance. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content that brings the book to life. This book comes alive with audio, video, weblinks, slideshows, activities, quizzes, and much more.

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.

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.

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.