Sabrina+Bell

Sabrina Bell http://facts.randomhistory.com/2009/03/02_human-body.html http://www.cbsnews.com/stories/2005/11/15/health/webmd/main1044716.shtml http://www.teachervision.fen.com/tv/printables/0876284764_17.pdf http://www.digestivesystemdisorders.com/digestive-system-diseases/digestive-system-diseases-and-disorders/ http://www.disabled-world.com/health/respiratory/ http://www.medicalglossary.org/diseases_nervous_system_diseases_definitions.html http://www.human-body-facts.com/muscular-system.html

There are a lot of systems, and activities of the entire human body. The human body is made of a variety of structors and functions. There are diseases, disorders, our bodies can obtain, but the human body also can fight bacteria and certain illnesses. In fact, there are a massive amount of neurons that carry electrical signals that control the body from the brain and spinal cord. Sometimes the body may have its good stages, and others times there may be malfunctions. Also, there are 206 bones in an adult's body that keeps humans moving, and everything works together.

Being healthy is very important. It can be beneficial to all ages, genders, and race. When being an active person exercise plays a huge in role in peoples lives. However, eating and drinking the right material needed for the body is important as well. Doing thirty minutes of exercise will reduce the changes of a variety of harmful situations. It can decrease the chances of heart problems and obesity. By drinking enough water and following the dietary guidelines from eating enough fruits and vegetables can also be helpful. Depending on the size and height of a person they are able the obtain a certain amount of proteins, carbs, vitamins and so forth.

The digestive system convert our meals into body fuel. It's about 30ft and in a series of tubelike organs. The way the digestive system is works is in a breakdown process. The function is a physically and chemically breaks down food into smaller pieces. Also it moves food to the digestive tract with the process of absorption. Last but not least, it eliminates food and waste products from the body.

In the digestive system there are a variety of organs. The esophagus, stomach, and intestine play a huge part. There are also diseases and disorders that are involved with the digestive system. For instance, esophagitis is inflammation of the esophagus. People who suffer from gastroesophageal reflux disease usually have esophagitis. When the lining of the stomach is irritated or even inflamed, the condition is called gastritis. Ulcers, wholes and even sores maybe formed, but can be relieved with medication.

There are other systems in the body, such as the respiratory system. The main function of the respiratory system is to supply blood with oxygen to travel through out the body. In the process of breathing oxygen is being inhaled, and exhaling carbon dioxide. The lungs are storage for the air ways.

There are two common factors that can cause disease and disorders in the respiratory system. Smoking, and air pollution may cause lung cancer. Some conditions that are obstructive to the respiratory system are bronchitis, emphysema, and asthma attacks. Some conditions of restrictive are fibrosis, sarcoidosis, and alveolar damage. They are usually caused by irritation of the lungs.

Another system of the body is the circulatory system. It's function is to transport nutrients, water, and oxygen to the cells. Also, it carries away waste such as carbon dioxide. The heart, blood, and blood vessels are the organs and parts the circulatory system is divided into. It connects all the body cells and travels through the entire body.

The diseases and disorders associated with the circulatory system are hypertension, coronary artery disease, cardiomyopathy. Hypertension is when the blood pressure is higher than recommended, and can increase chance of heart attack. Coronary artery disease is due to accumulation of plaque in the artery walls. Cardiomypathy is a disease which the cardiac muscle is weak, and may cause death if severe.

The next system in our body is the nervous system. There are a lot of structures of the nervous system. The central nervous system contains the brain, and the spinal cord. Some other structures are sympathetic, and parasympathetic. Sympathetic is activated by stress; it increase heat rate, breathing rate, pupil size, and sweating. Parasympathetic maintains body functions in control when relaxed. It also restores body to a pre-stress state.

Autoimmune disease of nervous system is caused by cellular or humoral immune responses. These are directed to the auto-antigens and tissue components. However, demyelinating diseases are the loss of dysfunction of myelin in central or the peripheral nervous system.

Muscles are stretched across joints and provide the force necessary so our bodies can move. The muscles work in groups and are linked to the bone while responding to nerve impulses. The skeletal muscle is connected to the skeleton. The smooth muscle is found in our internal organs which include bladder, blood vessels, digestive system and more. The cardiac muscle is found in the heart obviously, and can stretch and contract.

Muscle diseases range from through out the body. For example myositis is caused by bacterial or parasitic infections. It is inflammation of the muscle fibers.

Last but not least the skeletal system. The functions of the skeletal system is to support, help movement, protection, and production of red blood cells. It is also a storage for minerals, and chemical energy. We have 206 bones like once mentioned, and it provides shape. A common bone disease humans get as we get as we age is osteoporosis. Osteoporosis is loss in the bone marrow and is common is women. It is the lack of calcium and minerals that we loose as yeas pass, which makes bone extremely fragile.