The respiratory system contributes to the loss of 10%–20% of body water. This includes both the production of sweat and breathing. This amount can vary depending on a person’s activity level and body composition.

What is the respiratory system?

The respiratory system is responsible for taking in air and breathing it out. The lungs are located near the chest and are connected to the thorax. Air passes through the lungs and into the alveoli, where oxygen is absorbed. The carbon dioxide that is produced is removed from the blood by the red blood cells and expelled through the mouth and nose as we exhale.

What does the respiratory system do?

The respiratory system is a group of organs and tissues that work together to help you breathe. The respiratory system’s main job is to move fresh air into your body, for extracting oxygen and removing waste gases.

What organs are in the respiratory system?

Numerous components of the respiratory system work together to support breathing. Your lungs receive air from your airways. Your system of airways includes your:

  • Nose
  • Lungs
  • Trachea
  • Breathing muscles (the diaphragm, the rib cage muscles, and the abdominal muscles)

What does the larynx do in the respiratory system?

The larynx is a small organ located in the throat that helps to produce speech. The larynx is surrounded by cartilage and muscle and sits above the windpipe. When you speak, the vocal cords vibrate, which moves air through the windpipe and into your lungs. The larynx also helps to control breathing, and when it’s damaged, it can make it difficult to speak or breathe.

What does the diaphragm do in the respiratory system?

The diaphragm is a muscle in the respiratory system that helps to move air in and out of the lungs. When you breathe in, the diaphragm pushes down on the stomach, which causes the air to get sucked into your lungs. The diaphragm then relaxes and allows the air out of your lungs.

What is the main muscle of the respiratory system?

The most crucial muscle in the respiratory system is the diaphragm, a dome-shaped layer of muscle that separates the chest cavity from the abdomen (called inhalation or inspiration). The lower ribs of the rib cage, the spine, and the base of the sternum all support the diaphragm.

Where does gas exchange occur within the respiratory system?

At the end of each bronchiole is a cluster of little air sacs called alveoli. Alveoli are wrapped in tiny blood vessels called capillaries. The air you breathe in fills these air sacs with oxygen-rich air. This is where the exchange of gases occurs.

How does asthma affect the respiratory system?

Asthma is a respiratory illness that causes inflammation of the airways. This can make it hard to breathe, and it can be life-threatening if not treated properly. 

The inner walls of your lungs’ airways may swell and become irritated if you have asthma. Additionally, the linings of your airways may secrete too much mucus. An asthma attack follows. You may cough and wheeze during an asthma episode because of your constricting airways, which makes breathing more difficult.

How does the respiratory system work with the circulatory system?

The respiratory system helps to oxygenate the blood and remove toxins from the body. The circulatory system transports blood throughout the body. When the respiratory system works properly, it can help to ensure that the blood is oxygenated and free from toxins. This can help to prevent disease and promote healthy functioning in the body.

How does the respiratory system work with the digestive system?

The respiratory system helps us breathe by transferring oxygen from the air we breathe into our bloodstream. The digestive system then uses that oxygen to help break down food so that we can absorb the nutrients that we need to survive. These processes are called respiration and digestion. 

The respiratory system works together with the digestive system to extract food and water from the environment and turn it into energy that the body can use. 

How does lung cancer affect the respiratory system?

The lungs are located in the chest and use oxygen for breathing. The airways connect the lungs to the outside world, and the breathing tubes take the air from the airways and deliver it to the lungs. Lung cancer can cause a number of problems in the respiratory system. The cancer cells can grow into large masses called tumors. These tumors can block blood flow to the lungs, leading to difficulty breathing. They can also spread to other parts of the body, such as the brain or spine. If left untreated, lung cancer can be fatal.