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Primary function of the respiratory system - ✔✔bring oxygen into the body
and remove carbon dioxide
Four parts of the respiratory system - ✔✔Respiratory tract, Respiratory
membrane, lungs, and diaphragm (and other accessory muscles)
Upper and lower airway are separated by? - ✔✔Glottis
Functions of the upper airway - ✔✔warm, filter, and humidify air
Nasal cavity contains - ✔✔Turbinates and palates
nasal turbinates - ✔✔increase the surface area of the nasal mucosa and
cause turbulence in airflow
Hard palate - ✔✔anterior portion, supported by bone
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,soft palate - ✔✔posterior portion, not supported by bone
nasopharynx - ✔✔region of the pharynx at the back of the nose and to the
left of the soft palate
ciliated mucous membrane - ✔✔keeps contaminants out of respiratory
tract
tonsils - ✔✔lymphatic tissue responsible for filtering bacteria and other
foreign materials
oropharynx - ✔✔the area directly posterior to the mouth
The tongue is connected to the floor of the mouth by the
____________________. - ✔✔hyoid bone and mandible
laryngopharynx - ✔✔opens into larynx anteriorly and the esophagus
posteriorly
Epiglottis - ✔✔A flap of tissue that seals off the windpipe and prevents
food from entering.
Larynx - ✔✔Bridge that connects the pharynx to the trachea
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, Larynx function - ✔✔Speech production
Lower airway consists of: - ✔✔Trachea, bronchiole tree, lungs, alveoli
Trachea function - ✔✔connects larynx to lungs
Carina - ✔✔Point where right and left lung split
_______ primary bronchus is shorter and wider than the ______ primary
bronchus. - ✔✔right, left
secondary bronchi - ✔✔5 main bronchi for each lobe of the lung
How many lobes does the right lung have? - ✔✔3 lobes
How many lobes does the left lung have? - ✔✔2 lobes
Alveoli - ✔✔tiny air sacs in the lungs where gas exchange occurs
type 1 alveolar cells - ✔✔Almost empty, better for gas exchange
type 2 alveolar cells - ✔✔produce surfactant
Surfactant - ✔✔reduces the surface tension within the alveoli and keeps the
alveoli expanded
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