Human Body The body comes in many different shapes and sizes Humans come with different skin color hair color and eye color as well as entirely differently shaped features such as noses mouths and ears Some people are tall while others are short But even though there is a great range of differences in our appearances all our bodies contain the same parts We all have 206 bones 600 muscles and 22 internal organs There is still so much left to discover about the more complicated areas of the body The human brain is one of the most complex organs on our planet There are as many neurons in the brain as there are stars in the Milky Way galaxy so it is no surprise that despite recent advances in the science of the brain we still find ourselves with so many unanswered questions about how the brain works It is also true that there is still so much to discover about cells DNA and genes and how to beat some of the diseases our bodies can catch We will help you to find out what we as humans already know
In this book we will answer some of the questions you might have about the human body What is inside the body How does it work We will answer these questions and many more We will look at a large range of structures within the human body and give you pictures and details of how each part works You will also uncover many myths and discover some amazing facts about the human body Introduction
Human Body Skull One of the most important and complex parts of the human skeleton is the skull The skull is very important as it provides armored protection to one of the most vital human organs the brain However only the upper dome-shaped part of the skull protects the brain The lower part creates a background structure which gives each human their facial features Facial features are not biologically important but they do play an important role within our social environment Similar features such as two eyes one nose and one mouth placed in roughly the same area on a face help humans to identify each other as the same species 4 3 1 2 5 1 Frontal bone known as our forehead 2 Nasal cavity has no bones and contains the nose 3 Eye sockets where the eyes swivel around to see 4 Brain box or cranium contains eight bones 5 Teeth fixed within the jawbone and set in both upper and lower jaws
Skull BRINGING THE DEAD BACK TO LIFE The lower part of the skull plays such an important part in the basis of facial features that modern technology allows scientists to work out what a person’s face would have looked like just by analyzing the skull and facial bones This process is called facial reconstruction and is applied in many fields including forensic science and archaeology DID YOU KNOW There are more than 20 different bones that make up the skull The brain box contains eight separate bones and there are 13 bones forming the front of the skull There are two separate parts to the upper jawbone and one part to the lower jaw The lower jaw works just like the hinges on a door allowing it to move up and down as we open our mouth The lower jaw is the only skull bone that can move
