BRAIN POWER Your brain is the most complex organ in your body Weighing about 3 pounds 1 4 kilograms in adult humans it’s one of the body’s biggest organs It controls the beating of the heart digestion of food and the workings of the lungs But that’s not all Our brain helps us to remember It controls our senses and gives us our unique personalities The brain is divided into two halves or hemispheres The right hemisphere controls the left half of the body The left hemisphere controls the right half of the body 4
MAIN PARTS OF THE BRAIN Cerebrum Cerebellum Brain Stem 5
pia mater arachnoid dura mater meninges A mass of fat and protein that looks like a blob of gelatin the brain is actually very delicate It needs protection The skull and three membranes called meninges protect the brain The spaces between these membranes are filled with fluid This fluid helps cushion the brain from damage 6
The brain is part of a larger system known as the nervous system The nervous system includes the brain the spinal cord and the nerves that link them with all parts of the body Using incoming and outgoing signals the nervous system controls all of our body’s activities It also helps keep us safe SPINAL CORD 7
