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Nasal Cavity- filters out particles and warms air

Palate- separates mouth and nasal cavity so breathing and eating can take place simultaneously

Epiglottis- covers the glottis when swallowing food

Larynx- vocal cords stretched across lumen, at the beginning of trachea

Trachea- windpipe, has semicircular cartilage rings which prevent it from collapsing.

Bronchus- division of the trachea into two, has cartilage rings

Bronchiole- further branching of the bronchus, has no cartilage rings

Alveoli- small air sacs only one cell thick where gas exchange takes place

Lungs- made of Bronchus, bronchiole and alveoli

Intercostal Muscles- move the rib cage, thus changing volume of thoracic cavity and causing inspiration and expiration (breathing in and out)

Sternum- attached to each pair of ribs

Pleural membrane- surround the lungs and thoracic cavity

Pleural fluid- moistens surfaces of membranes to prevent friction

Diaphragm- muscular structure separating abdominal cavity and thorax

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Daphne Dooley

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3y ago

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