Breathing and respiration
We breathe without thinking. Breathing is and involuntary action. It’s controlled by a part of the brain that also controls heart beat. Breathing is just the process of inhalation and exhalation.
Inhalation is when you take air from your nose trough your mouth.
Exhalation is when you push air through your nose and mouth.
The most important muscles in the process are the diaphragm and rib. They contract when you inhale and relax when you exhale.
There is a exchange of gasses that happen in tiny sacs called alveoli. The exchange is between the lungs and the heart.
Respiration
Respiration is the process of getting oxygen into the body and realizing carbon dioxide. Respiration includes the exchange of oxygen and carbon dioxide between the blood and the cells.


Respiration system
The lungs are the principal organs of the respiratory system.There are other organs involve. The respiratory system is made up of organs that allow to enter oxygen and carbon dioxide.
Organs of the respiratory system

• Nose
• Mouth
• Larynx
• Pharynx
• Lungs 
• Diaphragm

How Respiration Works
Nasal cavity maintain warm the air you breath. The nose hair catch particles from the air and keep them from entering to the lung. Then the air passes trough the pharynx. Then it goes to the larynx that is found below the pharynx. The air goes to the trachea that leads down the lungs where it divides into the right and left bronchi and
goes trough the alveoli.

BREATHING PROCESS
Breathing is the involuntary process that moves air in and out of our lungs. It also is when a gas exchange takes place, bringing in oxygen and exhaling carbon dioxide. Breathing carries oxygen to all our body through the blood stream, so during the breathing process we use both the respiratory system and the circulatory system.
Breathing begins when we inhale, or breath in oxygen, and it moves into the alveoli, sacs in our lungs where gas exchange occurs. In the alveoli the oxygen diffuses into the bloodstream where the blood rich in oxygen is pumped to the heart. After the blood reaches the heart it is pumped through

the aorta.
From the aorta, oxygen-rich blood moves through all the arteries and capilleries in our bodies.
The oxygen then is difused from the capilleries into the body cells where it spreads throughout the body.
while this happens, the carbon dioxide molecules do the opposite and move from the body cells into the capilleries, where it is pumped back to the heart and into the lungs. From the lungs we exhale and breath out the carbon dioxide.


Respiratory diseases

There are many diseases that are found in the muscles, tissues, and organs that make up our respiratory system. They can range from a mild cold to even severe diseases, such as lung cancer. The milder illnesses that can be treated with antibiotics are Bronchitis, Asthma, and Pneumonia. The more sever diseases that are harder to cure are Tuberculosis and Lung cancer.

BRONCHITIS
Bronchitis is when the bronchi become red and swollen, and make it more difficult for air to move in and out of our lungs. This is caused by bacteria and/or viruses that reach the bronchi and cause them to become inflamed. Acute bronchitis can be cured with antibiotics.

ASTHMA
Asthma is a chronic illness meaning that it never goes away. It is when the bronchioles and bronchi become inflamed. Some symptoms are difficulty breathing, tight chest, and wheezing. Asthma is caused by allergies (dust, pollen, foods, molds, animals, medicines, etc.), warm air, cold air, moist air, smoking, pollution/factory fumes, exercise, and stress, and it is not contagious. Many people with asthma still lead healthy active lives and use an inhaler, which helps the muscles around the bronchi to relax and allows there to be a better flow of air.
PNEUMONIA
Pneumonia is a disease when alveoli become inflamed. This is a pretty common disease and is caused by bacteria, fungi, viruses, and parasites that enter the lungs and cause the alveoli to swell. People from all age groups can get this illness, but it is easily treated with antibiotics.
TUBERCULOSIS
Tuberculosis is a common, but deadly, disease caused by a certain kind of bacteria called Mycobacterium. The infection is usually found in the lungs, but can spread throughout the whole body. Some symptoms are a severe cough, coughing up blood, fever, and weight loss. This is very contagious and can spread easily through the infected person coughing and sneezing. About half of the people infected with tuberculosis die if they are left untreated. The treatment requires a long period of antibiotics.
LUNG CANCER
Lung cancer is a severe disease that affects the growth of cells in our lungs. The tumor affects how the tissue grows, and can easily spread throughout the body without any treatment. This is a very serious disease and is the number one cause of death in men in the United States, and the second cause of death in women after breast cancer.

Respiration health
Life style disease
Life style disease are caused by or own choice. For example when you choose to smoke you can have cancer and heart disease. You can also make healthy choices. There are many choices you can take to keep your self healthy.
Avoid Smoking
No smoking is the most effective way to reduce your risk of developing respiration diseases.
Eat, Exercise and Rest
If you eat well and sleep the time you should and exercise well. You help to keep your cardiovascular system and immune system strong.
Wash your hands
You kill viruses when you wash your hands. That is an easy way to avoid getting sick.

In conclution its important to kow how your body works and how to take care. Hope this information help you to understand the respiratorial system.
Sources picturesPICTURE