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The respiratory system is the group of tissues and organs in your physique that allow you to breathe. This system contains your airways, your lungs, and the blood vessels and muscles hooked up to them that work collectively so you'll be able to breathe. Airways are the pipes that carry air full of oxygen into your lungs and carbon dioxide (a waste gasoline) out of them. The airways are made up of your nose and nasal cavities, your mouth, voice field (larynx), trachea (windpipe) and bronchial tubes. The air travels by means of your voice field, down your windpipe after which though two bronchii into your lungs. Cilia (tiny mucous-lined hairs) in your airways lure overseas particles and germs to filter the air that you simply breathe. You then cough or sneeze the particles out of your physique. Your lungs, and the blood vessels linked to them, deliver oxygen to all parts of your physique if you inhale, and take away carbon dioxide from your physique when you exhale. Your lungs, which fill your chest cavity, or thorax, are on both facet of your breastbone. The bronchial tubes or bronchii, which are inside your lungs, finish in alveoli, bunches of tiny air sacs covered in a mesh of blood vessels that connect with the veins and arteries that carry your blood throughout your body. The muscles across the lungs assist your lungs broaden and contract so you possibly can breathe. These muscles include the diaphragm and intercostal, abdominal and neck muscles. The muscles in your neck and round your collarbone are generally used to help you breathe when the perform of the other muscles is impaired for some motive.
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