I did a lot of research on the brain and music, what music and the brain are made up of, and which section of the brain is responsible for everything. The brain is actually made up of four parts. The brain is responsible for every action that you do, as it is part of the nervois system, sending out signals to your body to do movements. Billions of cells coordinate thoughts, emotions, behavior, movement and sensation. It also controls your heart rate. The cerebrum is the largest part of your brain and the outer part of the cerebrum is called the cerebral cortex; “gray matter”. The cerebrum is divided into two halves, which are connected by a thick tract of nerves. The four parts of the brain are the frontal lobe, the parietal lobe, the occipital lobe, and the temporal lobe. The frontal lobe controls thinking, planning, organizing, problem-solving, short-term memory and movement. The parietal lobe interprets sensory info, taste, temperature, and touch. The occipital lobe processes images from eyes and link that info with images stored in your memory, so that you can remember what you looked at and then know what you are looking at later. The temporal lobe processes info from your sense of smell, taste and sound and also helps you remember long term things. The research I did on our heart taught me many things. Our heart is actually two pumps in one. The left side pumps blood from the lungs to the body. The right side pumps blood TO the lungs, from the body. Our heart is also made up of four blood-filled areas. Each of those is called a chamber, on the top are the atria and on the bottom are the ventricles. Through the center runs a thick wall of muscle called the septum, separating the left and right side of the heart. The atria and ventricles work as a team. The atria fills with blood, dumps it into the ventricles, and then the ventricles compress and pump blood out of the heart. The blood relies on four special valves inside the heart. They let blood flow from the atria to the ventricles. Some two heart valves are the mitrol valve and the tricuspid valve. The other two valves are the aortic valves and the pulmonary valves. They are in charge of controlling the flow as the blood leaves the heart. All of these valves work together to keep blood flowing forward. The brain controls your heart rate, the more exercise or certain activities you do that excite you, the faster your heart rate goes. Your heart beat is caused by contractions in your heart. You have a 70-100 bpm when you are resting, and it rises when you exercise. I researched about systolic and diatolic blood pressure as well. Systolic blood pressure occurs in an event of a systole, when the heart is beating actively, ejecting blood into the arteries. Diastolic blood pressure is the minimum pressure in arteries during relaxation and dilation of the ventricles when they are full with blood. These two blood pressures are used in most/all blood pressure measurements. They help others to figure out if they are at risk of hypertension or in the stage of pre-hypertension. The unit used to measure these two blood pressures is mmHG; milimeter of mercury. Systolic pressure tends to be a lot higher than diastolic pressure. Systolic pressure ranges from 100-120 mmHG when a person is resting, and diastolic pressure ranges 60-90 mmHG, while the BPM is about 60-70 when a person is resting.