Why does the heart beat? Anatomy for children

How the circulatory system is arranged, how the muscular system works, what all our bones and spine are for - you will find answers to all these questions on the pages of the encyclopedia "Anatomy". You will also learn what emotions are, how to manage them, how we grow and mature. A person is a complex system, but also very interesting! Study yourself - and your body! Can you imagine how interesting our body is arranged!