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.
Knox County, Tennessee. Knox County is a county in the U.S. state of Tennessee. As of the 2010 census, the population is 432,226. Its county seat and largest city is Knoxville. The county is at the geographical center of the Great Valley of East Tennessee. Near the heart of the county is the origin of the Tennessee River at the union of the Holston and French Broad Rivers.