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9 Cards in this Set
- Front
- Back
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Nose |
- contains two nasal cavities - warms air during inhalation and cleanses it through coarse hairs and mucus - humidifies air due to wet surfaces of the membranes - contains odour receptors - tear glands drain into nasal cavity |
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Pharynx |
- Connects nasal and oral cavities to larynx - Tonsils form a protective ring around the entrance to trachea -Larynx and trachea are normally open |
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Larynx |
- passageway for air between pharynx and trachea - contains vocal cords, which are two tendons that vibrate to make sounds |
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Glottis & Epiglottis |
- opening between folds - flap of tissue that prevents food from entering |
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Trachea |
- connects larynx with bronchi - C-shaped cartilage rings - open towards esophagus to allow swallowing |
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Cilia |
- sweep mucus towards the pharynx - smoking can destroy cilia |
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Bronchi & Bronchioles |
- supported by full cartilage rings - branches into Bronchioles and lacks cartilage rings - bronchioles leads into alveoli |
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Alveoli |
- sac-like endings of the Bronchioles - one cell thick - high vascularized by pulmonary capillaries to prevent drying out and to aid gas diffusion - coated with surfactants (mostly lipoprotein) that lower surface tension - equipped with stretch receptors |
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Surface tension |
- acts at the air-water interface |
