Brain Tumor (cont.)
In this Article
What is the brain?
The brain is a soft, spongy mass of tissue. It is protected by:
The brain directs the things we choose to do (like walking and talking) and the things our body does without thinking (like breathing). The brain is also in charge of our senses (sight, hearing, touch, taste, and smell), memory, emotions, and personality.
A network of nerves carries messages back and forth between the brain and the rest of the body. Some nerves go directly from the brain to the eyes, ears, and other parts of the head. Other nerves run through the spinal cord to connect the brain with the other parts of the body.
Within the brain and spinal cord, glial cells surround nerve cells and hold them in place.
The three major parts of the brain control different activities:
The cerebrum is divided into the left and right cerebral hemispheres. The right hemisphere controls the muscles on the left side of the body. The left hemisphere controls the muscles on the right side of the body.
Medically Reviewed by a Doctor on 3/14/2014
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