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Respiratory System Notes

Respiratory System Notes - • In the lungs the bronchi...

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RESPIRATORY SYSTEM Overview: The respiratory system brings life giving oxygen in the body and helps get rid of carbon dioxide Process of bringing oxygen and getting rid of carbon dioxide is called respiration Lungs are the main organs of gas exchange Flow of Air: Air enters the body through the mouth and nasal cavities Air then flows into the pharynx, or throat At the base of the pharynx is the larynx, or voice box Attached to the larynx is the trachea, or windpipe, which carries air to the lungs The trachea branches into 2 tubes, called bronchus, which sends air to the lungs
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Unformatted text preview: • In the lungs the bronchi branch into many tubes, the smallest of these tubes is called a bronchiole • At the end of each bronchiole is an air sac called a alveolus, a site for gas exchange • Movement of the rib muscles and the diaphragm, a sheet of muscle that separates the chest cavity from the abdominal cavity, pull air into the lungs and push air out • Breathing rate is controlled by the brain stem that detect carbon dioxide in the blood...
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