The human body is divided into many different parts called organs. All of the parts are controlled by an organ called the brain, which is located in the head. The brain weighs about 2.75 pounds, and has a whitish-pink appearance. The brain is made up of many cells, and is the control centre of the body. The brain flashes messages out to all the other parts of the body. The messages travel in very fine threads called nerves. The nerves and the brain make up a system somewhat like telephone poles carrying wires across the city. This is called the nervous system.
The nerves in the body don’t just send messages from the brain to the organs, but also send messages from the eyes, ears, skin and other organs back to your brain. Some nerves are linked directly to the brain. Others have to reach the brain through a sort of power line down the back, called the spinal cord. The brain and spinal cord make up the central nervous system.
The brain doesn’t just control your organs, but also can think and remember. That part of the brain is called the mind.
Twenty-eight bones make up the skull. Eight of these bones are interlocking plates. These plates form the cranium. The c
nerves: Pathways that the brain uses to send messages to and from different parts of the body.
The middle region is deep inside the brain. It’s chief purpose is to connect the front and the back of the brain together. It acts as a "switchboard", keeping the parts of your brain in touch with each other.
hemisphere: These are the two different part of the cerebrum. Almost all of the brain’s work is done there.
glucose: This is a combination of sugar and water.
central nervous system: This the brain and spinal cord put together. Also see: brain, spinal cord.
If the left side of your brain is more developed like most people’s are, you are right handed. On the other hand if the right side of your brain is more developed, then you will be left handed. The right side of your brain is more artistic and emotional while the left side of your brain is your "common sense" and practical side, such as figuring out math and logic problems.
The medulla is low down at the back of your head. It links the brain to the top of the spinal cord. The medulla controls the way your heart pumps blood through your body. It also looks after your breathing and helps you digest food.
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