Human body. 123 questions-123 answer

Your body is built of millions of tiny bricks - living cells. The shape and stability of the body gives the frame of bones - the skeleton. This complex system operates, obeying the orders of the brain. Thanks to the coordinated work of all organs, muscles, blood vessels, nerve fibers, you can grow, move, run, jump, study, speak, see, hear and think! There would be billions of inhabitants on Earth, but you will not find even two exactly the same people among them! Each person has his own oval of the face, his own color of the eyes, his own shape of the nose, lips and ears. These features are individual, that is, no one else is found. Even between very similar twins there are differences. We are all different, but at the same time there is much in common between us, because we belong to one biological appearance “rational person”, and our bodies are arranged the same.