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.
The race breakdown of the population in Knoxville varies per year, but currently 171,165 are one race and 2,725 are two or more races. Of the 173,890 people who live in Knoxville, there are 42,591 under 20 years old. The sex breakdown of the 20 years old and younger population in Knoxville is 21,628 male and 20,963 female.