Brain tissue is composed of neurons and other supporting cells, such as glia. Neurons in the brain are interconnected to make functional circuits.If these connections are interrupted as a result of trauma, brain function is impaired.rain tissue is composed of neurons and other supporting cells, such as glia. Neurons in the brain are interconnected to make functional circuits.
Location in Chester County and the state of Pennsylvania. Location of Pennsylvania in the United States. Paoli /peÉªËoÊliË/ is a census-designated place in Chester County near Philadelphia, Pennsylvania, United States. It is situated in portions of two townships: Tredyffrin and Willistown. At the 2010 census, it had a total population of 5,575.
Not to be confused with Allegheny, Pennsylvania. Allegheny County (/Ã¦láµ»ËÉ¡eÉªni/) is a county in the southwestern quarter of the U.S. state of Pennsylvania. As of 2014 the population was 1,231,225, making it the second-most populous county in Pennsylvania, following Philadelphia County. The county seat is Pittsburgh.