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The Human Brain
The brain is a delicate and complex organ that works with the spinal cord to process and relay information and is part of the central nervous system. All bodily functions, both voluntary and involuntary, are controlled by different paths of the brain. The largest part of the brain, the cerebrum, consists of two hemispheres and has more than 100 billion neurons or nerve cells. The cells are linked within networks that receive and transmit impulses through tiny waves of electricity. These densely bundled neurons create heavy folds in the cerebrum that make up the cerebral cortex and give the brain its unique shape and texture. Due to its delicate structure, the brain is protected by a cushioning layer of fluid, the meninges, which include the dura mater, arachnoid, and pia mater, and the bones of the human skull. Along with the cerebrospinal fluid, a large network of arteries and veins help to protect and provide nutrients to the brain. When disease or injury occur, the brain and brain function can be impacted and functions can change drastically.
Touch an area of the brain model to learn about the structures. Touch again to learn more information. |