Parts of the brain are divided into three main categories: cerebra, cerebella, and medullas. The cerebra is the largest part of the brain and is responsible for higher functions such as thought, language, and emotion. The cerebella is located at the back of the brain and is responsible for coordination and balance. The medullas is located at the base of the brain and is responsible for controlling vital functions such as breathing, heart rate, and blood pressure. All three parts of the brain work together to maintain the body's homeostasis.