The brain is one of the largest and most complex organs in the human body. It is made up of more than 100 billion nerves that communicate in trillions of connections called synapses. The brain is made up of many specialized areas that work together: â¢ The cortex is the outermost layer of brain cells. Thinking and voluntary movements begin in the cortex. â¢ The brain stem is between the spinal cord and the rest of the brain. Basic functions like breathing and sleep are controlled here.
Knoxville is an unincorporated community in Frederick County, Maryland, United States. The Robert Clagett Farm and Magnolia Plantation are listed on the National Register of Historic Places.
Knoxville is a city in the U.S. state of Tennessee, and the county seat of Knox County. The city had an estimated population of 185,291 in 2015 and a population of 178,874 as of the 2010 census, making it the state's third largest city after Nashville and Memphis. Knoxville is the principal city of the Knoxville Metropolitan Statistical Area, which, in 2013, had an estimated population of 852,715. The KMSA is, in turn, the central component of the Knoxville-Sevierville-La Follette Combined Statistical Area, which, in 2013, had a population of 1,096,961.