The Brain

Topics: Human brain, Brain, Cerebrum Pages: 3 (884 words) Published: May 15, 2011
The Brain

The central core of the human brain, often referred to as the “old brain”, is the most primitive part of the brain and can be found in all vertebrates dating back more than 500 million years. The central core is designed to help the human body with basic survival functions such as breathing, heartbeat, movement, balance, and sleep. Without the central core, the brain would not be able to do major task like telling our hearts to beat and how fast. The central core of the human brain is separated in to sections. The hindbrain, which contains the Medulla, Pons, and Cerebellum; the midbrain is made up of the reticular formation; and the forebrain that contains the thalamus. Each of these parts of the central core contributes to the life function of the human body. The cerebral cortex of the brain, the “new brain”, is the central processing center of the brain. In the cerebral cortex the brain processes motor, visual, auditory, and sensory functions. Like the central core the cerebral cortex is separated into different parts, these two parts are called the cerebral hemispheres. The corpus callosum acts as a bridge between each hemisphere. Each hemisphere has four sections of its own, called lobes. The occipital, parietal, temporal, and frontal are the four lobes of the the cerebral cortex. These separate parts of the hemispheres each control a different function of the brain. Between the two hemispheres in the cerebral cortex there is the contralateral control arrangement by which one side of the brain controls the movement on the opposite side of the body. Although the two separate sides of the cerebral cortex do not function in exactly the same way, they do work together as a team to make the human body operate correctly. The left and right hemisphere, often referred to as the left and right brain, each have different functions in which they are in control of. The left hemisphere has speech, language, reading, and writing. The right...
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