The brain is composed of many types of brain cells, mainly neurons and glial cells. There are about 100 billion neurons in the brain. Neurons transmit electrochemical signals between the brain and the nervous system. Glial cells account for 90% of the brain's total cells. The most important function of glial cells is to provide support for the neurons.

Neurons are very important in brain function. Neurons are the brain cells that store and process information. Neurons communicate with other neurons by synapses. Brain cells are unlike other cells in the body because they never divide and stay in the interphase stage of cell reproduction without progression. Neurons in the brain develop by forming synapses with other neurons. It has been shown that brain cells can regenerate.

Over 50 million people have damage to their nervous system in one form or another. Some of the most common disorders are: cerebral palsy, Huntington's disease, muscular dystrophy, and Parkinson's disease. There are many more that are directly related to the brain. There are also brain tumors, convulsive diseases like epilepsy, and cerebrovascular issues like stroke. Considering the vast number of people impacted by problems in the brain, it is not surprising that researchers are actively studying the brain to learn more.

Brain cell regeneration is especially important in cases of injury. In the past, if a person experienced an injury of the brain, it was thought that damaged portions of the brain were permanently destroyed. A recent study has shown that brain cells do regenerate, and this helps plan appropriate treatment for brain injury patients.

The brain is one of the most complex parts of the body. Braincell.org is committed to providing complete information about the science behind brain function. The main goal of braincell.org is to promote education about brain cells and their function.