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14 terms

Respiratory System

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What is the function of the nasal cavity?
warms and moistens, and CLEANS air that comes in through nose and passes it to the pharynx
What is the function of the oral cavity?
warms and moistens air that comes in through the mouth and passes it to the pharynx
What is the function of the pharynx?
connects the oral and nasal cavities to the trachea and esophagus
What is the function of the epiglottis?
prevents food from entering the lungs by closing off the trachea
What is the function of the trachea?
carries air between the pharynx and lungs
What is the function of the bronchi?
carries air between the lung and the pharynx
What is the function of the bronchioles?
carries air between the alveoli and the bronchi
What is the function of the alveoli?
carries out gas exchange with the blood
What is the function of the diaphragm ** not technically part of this system
contracts and relaxes to create air movement into and out of the lungs.
What are the tiny air sacs in the capillaries called in the lungs that exchange O2 and CO2?
alveoli
What are the major structures found in the respiratory system?
oral and nasal cavitiy, pharynx, epiglotis, larynx, trachea, bronchus
What does the respiratory system import?
O2
What does the respiratory system export?
CO2
What does the respiratory system protect?
the lungs