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        | structure that warms, moistens and filters air as it enters the respiratory tract and houses olfactory receptors for the sense of smell |  | 
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        | air filled spaces within skull that open into the nasal cavity |  | 
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        | partition between the oral and nasal cavities, divided into the hard and soft palate |  | 
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 | Definition 
 
        | throat, passageway for food to the esophagus and air to the larnyx |  | 
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 | Definition 
 
        | part of the pharynx directly behind the nasal passages |  | 
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 | Definition 
 
        | central portion of the pharynx between the rood of the mouth and upper edge of the epiglottis |  | 
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 | Definition 
 
        | central portion of the pharynx between the rood of the mouth and upper edge of the epiglottis |  | 
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 | Definition 
 
        | central portion of the pharynx between the rood of the mouth and upper edge of the epiglottis |  | 
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 | Definition 
 
        | lower part of the pharynx between the oropharynx opening into the larynx and the esophagus |  | 
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 | Definition 
 
        | oval lymphatic tissues on each side of the pharynx that filter air to protect the body from bacteria |  | 
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 | Definition 
 
        | lymphatic tissue on the back of the pharynx behind the nose |  | 
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 | Definition 
 
        | small projection haniging from the back middle edge of the soft palata, named for its grape like shape |  | 
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 | Definition 
 
        | voice box, passageway for air moving from the pharynx to the trachea, contains vocal cords |  | 
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 | Definition 
 
        | opening between vocal cords and larynx |  | 
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 | Definition 
 
        | lid like structure that covers the larynx during swallowing to prevent food from entering the airway |  | 
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        | Term 
 | Definition 
 
        | windpipe, passageway for air from the larynx to the area of the carina where it splits into the right and left bronchus |  | 
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 | Definition 
 
        | branched airways that lead from the trachea to the alveoli |  | 
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 | Definition 
 
        | two primary airways branching from the area of the carina into the lungs |  | 
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        | progressively smaller tubular branches of the airways |  | 
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 | Definition 
 
        | thin walled microscopic air sacs that exchange gases |  | 
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 | Definition 
 
        | two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration |  | 
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 | Definition 
 
        | subdivisions of the lung, two on left, three on right |  | 
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 | Definition 
 
        | membranes enclosing the lung, and lining the thoracic cavity |  | 
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 | Definition 
 
        | potetntioal space between the visceral and parietal layers of the pleura |  | 
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 | Definition 
 
        | muscular partition that separates the thorac from the abdomen and aids in respiration by moving up and down |  | 
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 | Definition 
 
        | partition that separates the thorax into two compartments, and encloses the heart esophagus trachea and thymus gland |  | 
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        | thin sheets of tissue that line the respiratory passages and secrete mucus, and viscid fluid |  | 
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 | Definition 
 
        | hair like processes from the surface of epithelial cells, such as those in the bronchi, that provide upward movement of mucus cell secretions |  | 
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 | Definition 
 
        | functional tissues of any organ such as the tissues of the branchioles and sacs that perform respiration |  | 
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