The brain consists of grey and (1) matter. It weighs(2) .It uses (3) of the body’s energy. It contains over (4) which make up nerve cells. These nerve cells are connected by electrical impulses. There are more possible connections in one brain than there are (5) . Scientists have mapped different areas of the brain which are responsible for (6) . The area of the brain related to controlling(7) could be compared to miniature film studios. Our eyes and ears send signals(8) , and it is our brain that interprets these signals and builds up a picture of the outside world. Scientists have also identified areas responsible for different emotions,such as(9) , love and laughter. There are also different areas for different types of thinking, such as learning your own language and learning a (10) language.