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| The process in which oxygen and glucose undergo a complex series of chemical reactions inside the cell |
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| The cells that line the nasal cavities have cilia which are tiny hairlike extentions that can move together in a sweeping motion. |
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| The throat... it is the only part of the respiratory that is shared with another system, the digestive system. |
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| From the pharynx, the air moves into the trachea, or windpipe. The epiglottis folds over the trachea to seal it off when you swallow food. |
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| Air moves from the trachea to the bronchi, which are the passages that take air to the lungs. |
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| The lungs are the main organ of the respiratory system. Inside the lungs the bronchi divides into smaller and smaller tubes that look like the branches of a tree. |
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| At the end of each bronchi there are tiny sacs that look like a bunch of grapes. These are called alveoli, and they are special lung tissue that allows the movement of gases between air and blood. |
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| A large dome-shaped muscle that is attached to the base of the lungs. It contracts and expands to cause air to flow in and out of the lungs. |
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| The larynx, or voice box, is at the top of the trachea under the epiglottis. Two vocal chords stretch across the opening of the larynx. |
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