Respiratory System


One of the main functions of the Respiratory system is to take in carbon dioxide and produce oxygen, which keeps us alive. The respiratory system gets oxygen from the air so that cells can change food into enegry. We need energy for our bodies and then we can stay active. It exchanges gases between the body's tissues and the external environment. Ventilation is the mechanics of breathing in and out. When you inhale, muscles in the chest wall contract, lifting the ribs and pulling them, outward. The diaphragm at this time moves downward enlarging the chest cavity. Reduced air pressure in the lungs causes air to enter the lungs. Exhaling reverses theses steps.

Major Organs

The major organs of the Respiratory System are the nose, trachea, and lungs. The job of the nose is to filter, warm, and moisten. The trachea is the main airway that supplies both lungs. The lungs are two organs in the chest that create respiration.another major organ used daily for breathing is the nose. The conducting zone begins with the nares (nostrils) of the nose, which open into the nasopharynx (nasal cavity).
The primary functions of the nasal passages are to:
1) Filter
2) Warm
3) Moisten
4) Provide resonance in speech
The Respiratory system also uses the nasal cavity, mouth, larynx, lungs, diaphragm, and bronchial tubes.

How it works

The main job of the Respiratory System is to provide the blood with oxygen, so the rest of the body can get oxygen too. The body does this by breathing. Our body breathes in oxygen, and breathes out carbon dioxide. By changing these gases in our bodies, the blood gets oxygen. Molecules of oxygen and carbon dioxide are passively exchanged.
The Respiratory System gets oxygen through the mouth, nose, trachea, lungs, and diaphragm. Oxygen enters through the nose and mouth and travels through the larynx and the trachea. The inhaled oxygen then follows a path through your body. At the same time, the blood in the veins releases carbon to alveoli. The diaphragm’s job is to pump out the carbon dioxide. When the diaphragm relaxes, breathing takes place.

How it works with other systems (at least 3 different systems)

One system that the Respiratory system works with is the digestive system. Food first goes down to the throat, and moves to the digestive system. It then breaks down the food into smaller substances that the body can use consisting of proteins . Both systems end up helping each other. The Digestive System provides our body with nutrients and the Respiratory System gives the Digestive oxygen.
Another system that the Respiratory system works with is the nervous system.The nervous system has a very different job compared to the Respiratory System, the nervous system consists of nerves (which makes you feel things, such as pain). It commands your body what to do by communicating with the brain. It even helps the Respiratory System by letting you notice when you are breathing and have most control. The nervous system is also what tells you to cry or scream when you get hurt.
The last system that works with the Respiratory system is the Circulatory system.The circulatory system is the system that transfers the food nutrients and oxygen to our body’s cells. It also helps to transport carbon dioxide and waste products. This helps the respiratory system move nutrients to keep the lungs cleansed. In exchange, the respiratory system lets air in to keep the circulatory system working.

Disorders of the respiratory system

The lungs have a number of symptoms including difficulty of breathing, coughing, chest pain, and wheezing. Lung cancer is the most common disorders in the lungs. Some of the other lung disorders are inflammation of the lungs, which is caused by viruses or bacteria. Pulmonary embolism happens when a blood clot or other substances goes into the lungs and blocks the major arteries. Another disorder are hiccups. even though no one would think that hiccups would be a disorder. They are commonly cured by breathing into a paper bag. Another disorder is Pharyngitis which is an inflammation of the mucus membrane in the throat, also known as a sore throat.


-The right lung is larger than the left lung.
-The breathing rate is faster in women and children then in men.
-We lose half a liter of water a day just by through breathing.

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