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Respiratory System

Respiratory System. Mrs. Wharton’s Science Class. Function. The respiratory system moves oxygen from the outside environment into the body. Respiration - the process in which oxygen and glucose undergo a complex series of chemical reactions inside cells.

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Respiratory System

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  1. Respiratory System Mrs. Wharton’s Science Class

  2. Function • The respiratory system moves oxygen from the outside environment into the body. • Respiration- the process in which oxygen and glucose undergo a complex series of chemical reactions inside cells. • As air travels from the outside environment to the lungs, it passes through the nose, pharynx, and bronchi. • Respiration- Produces carbon dioxide and water.

  3. Vocabulary • Cilia- tiny hairs that are found in the nose and inside the trachea • Pharynx- the throat • Trachea- windpipe • Bronchi- direct air into the lungs • Lungs- main organs of respiratory system, include bronchi • Alveoli- tiny sacs of lung tissue specialized for the movement of gases between air and blood. Found at the end of the bronchi.

  4. Gas Exchange • After air enters the alveolus, oxygen passes through the wall of the alveolus and then through the capillary wall into the blood. • Carbon dioxide and water pass from the blood into the alveoli

  5. Breathing • Diaphragm- a large dome shaped muscle at the base of your lungs. • When you breathe, the actions of your rib muscles expand or contract your chest , causing air to flow in or out.

  6. Voice • Larynx- voice box located at the top of the trachea • Vocal cords- 2 folds of connective tissue that stretch across the opening of the larnyx

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