Investigating body systems

"The immune system is a large network of cells, tissues, and organs that work together, acting like a fort with guards to keep out risky viruses and bacteria and destroy invaders. Readers will learn how researchers are striving to improve the body's immune system to fight off disease . . . illustrations help readers visualize the immune system at work"--Provided by publisher.

"The average person takes 17,000 breaths per day. This . . . book examines the mechanisms that make breathing work and the diseases that make breathing difficult . . . illustrations help readers visualize the respiratory system at work"--Provided by publisher.

"The control and command center of the whole body, we wouldn't be able to breathe, have a heartbeat, avoid danger, or sleep without the nervous system. Find out what illnesses affect the nervous system and how medical research has advanced our knowledge . . . illustrations help readers visualize the nervous system at work"--Provided by publisher.

"Your digestive system is like a production line. Food, drinks, or pills travel through tubes, filters, and holding rooms, as body chemicals work to extract nutrients. This . . . book explores gut microbiomes, human waste, and how the digestive system identifies problems . . . illustrations help readers visualize the digestive system at work"--Provided by publisher.