My first look at body systems

Did you know that the respiratory system helps you breathe? This system is often attacked by viruses, leading to infections such as colds, the flu, and COVID-19.

Did you know that the stomach is an organ? It is part of the digestive system, which helps break down food.

Did you know that the heart is the main organ in the circulatory system? It pumps blood through the body.

Did you know that the nervous system controls all the other body systems? Nerves carry messages between the brain and the rest of the body.

Did you know that every time you move, you use the muscular system? There are more than 600 muscles in the body.

Did you know that the bones of the skeletal system are incredibly strong? They are about five times stronger than steel.