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Stack #4194715
respiratory systen
| Term | Definition |
|---|---|
| nasal cavity | 3 ridges of bone increases the folding area and SA. very large blood supply close to capillaries. creates turbulence in the air which is warmed and moistened |
| pharynx | region at the back of the mouth. passage for both food and air |
| epiglottis | small flap of tissue mainly elastic cartilage. fits over the trachea when swallowing to prevent food entering the trachea/lungs |
| larynx | below the pharynx that contains the vocal chords supported by cartilage. sound production as air moves out of the lungs and flows over the vocal chords |
| trachea | tube from phranyx down to two bronchi and supported by C shaped rings of hyaline cartilage. holds the trachea open for air movement preventing collapse |
| bronchi | two tubes act as division of trachea, lined with pseudostratified epithelium. a pathway for air with cartilage rings stop airways collapsing |
| bronchioles | tiny last segments of tube which air passes through before reaching alveoli |
| alveoli | smallest structures at the end of the bronchioles. for rapid exchange of gases by diffusion |
| pleural membrane | covers the outer surface of the whole lung and the internal surface thoracic cavity. produces pleural fluid which acts t o reduce friction as the lungs moves with TC, ensures attached to TC |
| diaphragm | sheet of muscle and tendon which seperates the TC from the abdominal cavity. contracts and relaxes to allow ventilation of the lungs |
| intercostal muscles | skeletal muscles found between the ribs. aids in the movement of the ribs for the ventilation of the lungs (breathing) |
Created by:
Anesu8648
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