BIO202 - Ch 22 - Nose & Throat - Marieb/Hoehn - RioSalado - AZ
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| The nasal vestibule is lined with __. | skin containing sebaceous & sweat glands & hair follicles (vibrissae).
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| Nasal cavity lined w/what 2 mucous membranes. | Olfactory (small receptors) & respiratory (pseudostratified) columnar ciliated & goblet cells).
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| Serous cells in respiratory mucosa secrete? | Watery fluid w/enzymes including lysozyme & defensins.
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| Why does nose run when cold outside? | The cilia in mucus membrane become sluggish & don't conduct mucus down throat.
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| The curved conchae __. | greatly increase mucosal surface area exposed to air & enhance air turbulance in the cavity.
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| Few particles larger than __ nanometers make it past nasal cavity. | 6
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| What reclaims heat & moisture during exhalation? | Conchae & nasal mucosa
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| rhinitis | Inflammation of nasal mucosa - "runny nose"
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| The pharynx is commonly called? | The throat
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| 3 regions of pharynx | nasopharynx, oropharynx, & laryngopharynx
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| Nasopharynx serves only as __. | an air passageway - uvula closes off to prevent food from entering - continuous w/nasal cavity.
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| Swollen adnoids block the __. | nasopharynx
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| The tubal tonsils help protect __. | middle ear from infections likely spread from nasopharynx.
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| As nasopharynx blends into oropharynx, the epithelium changes from __. | pseudostratified columnar to a more protective stratified squamous.
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| The palatine & lingual tonsils are found where? | Embedded in the oropharyngeal mucosa.
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| The laryngopharynx is continuous w/ __ posteriorly. | esophagus
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| The adam's apple is the __. | laryngeal prominence
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| The framework of the larynx. | 9 cartillages connected by membranes & ligaments.
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| The __ seals the larynx when we swollow. | Epiglottis - 9th cartilage - elastic - covered by tastebud - containing mucosa.
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| The true vocal cords are __. | The pearly white vocal folds that vibrate & produce sound.
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| Vocal folds close during? | Valsalva's maneuver - lifting heavy load & emptying the rectum - defecation.
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| Windpipe | Trachea
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| 3 layers of trachea | mucosa (goblet cell-containing pseudostratified), submucosa (CT w/seromucous glands) & adventitia (CT & hyaline cartilage).
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| patent | open
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| In trachea, food contacting mucosa of __ causes violent coughing. | carina
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| Choking closes off the __. | trachea - Heimlich maneuver can open.
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