Examl 3:l BIOl 202/l BIO202l (Latestl 2025/l
2026l Update)l Humanl Anatomyl andl Physiologyl IIl Review|l Questionsl &l Answers|l Gradel A|l 100%l Correctl (Verifiedl Solutions)-l GCU
Q:l Whatl isl thel respiratoryl systeml functions?
Answer:
Gas/exchangel betweenl air/blood,l movingl airl to/froml exchangel surfacesl ofl lungs,l Protectingl surfaces,l dehydration,l temp.l changes,l pathogenl invasion,l producingl communicationl sounds,l facilitatingl olfaction
Q:l Whatl isl thel respiratoryl tract?
Answer:
Passagewaysl thatl carryl airl tol andl froml exchangel surfacesl ofl thel lungs
Q:l Whatl arel thel portionsl ofl thel respiratoryl tract?
Answer:
Conductingl portionl (zone)l andl respiratoryl portionl (zone)
Q:l Whatl isl thel conductingl portionl ofl thel respiratoryl tract?
Answer:
Beginsl atl nasall cavityl andl extendsl throughl pharynx,l larynx,l trachea,l bronchil andl largerl bronchiolesl -l cleanse,l humidifyl andl warml incomingl air
Q:l Whatl isl thel respiratoryl portionl ofl thel respiratoryl tract?
Answer:
Thel actuall sitel ofl gasl exchangel -l includesl smallest,l mostl delicatel bronchiolesl andl alveoli
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Q:l Whatl isl containedl inl thel upperl respiratoryl system?
Answer:
Thel nose,l nasall cavity,l paranasall sinuses,l andl pharynx
Q:l Whatl isl containedl inl thel lowerl respiratoryl system?
Answer:
Thel larynx,l trachea,l bronchi,l bronchioles,l andl alveolil ofl lungs
Q:l Howl manyl lobesl doesl thel rightl lungl have?
Answer:
3l lobes
Q:l Howl manyl lobesl doesl thel leftl lungl have?
Answer:
2l lobes
Q:l Whatl isl containedl inl thel nose,l nasall cavity,l andl sinuses?
Answer:
Externall nares,l nasall vestibule,l nasall septum,l nasall conchae,l meatuses,l palatel (hardl andl soft),l andl internall nares
Q:l Whatl isl thel purposel ofl thel meatusesl (superior,l middle,l andl inferior)?
Answer:
Itl createsl turbulencel -l airl bumpsl intol mucusl andl providesl timel forl warmingl andl humidification
Q:l Whatl isl thel respiratoryl defensel system?
Answer:
Eachl dayl approx.l al quartl ofl mucusl containingl lysozymel isl secretedl tol trapl particlesl andl killl bacterial -l defensinsl arel secretedl tol killl microbesl -l Nasall cavityl exposurel tol unpleasantl stimulil increasesl productionl ofl mucusl -l nasall mucosal richlyl suppliedl withl nervel endings,l irritatingl particlesl triggerl sneezel tol blowl irritantsl outl -l nasall cavityl cilial 2 / 4
sweepl mucusl withl trappedl debrisl towardl pharynxl tol bel swallowedl -l lowerl respiratoryl system,l cilial movel mucusl upwardl towardl pharynxl (mucociliaryl escalator)
Q:l Howl doesl thel mucusl humidifyl airl in?
Answer:
Swirlsl around,l picksl upl heatl andl evaporatedl waterl froml nasall mucusl -l protectsl delicatel respiratoryl surfacesl froml beingl effected
Q:l Howl doesl thel mucusl humidifyl airl out?
Answer:
Warmerl airl warmsl nasall mucusl andl waterl condensesl backl intol thel mucus
Q:l Thel breathingl throughl yourl nosel helpsl preventl heatl lossl andl waterl loss?l (Truel orl False)
Answer:
True
Q:l Thel breathingl throughl thel nosel helpsl preventl heatl lossl butl increasesl waterl loss?l (Truel orl False)
Answer:
False
Q:l Thel breathingl throughl thel nosel helpsl preventl waterl lossl butl increasesl heatl loss?l (Truel orl False)
Answer:
False
Q:l Whenl cold,l thel cilial becomel sluggishl andl mucusl dripsl outl nose?l (Truel orl False)
Answer:
True
Q:l Capillariesl andl thin-walledl veinsl warml incomingl air?l (Truel orl False)
Answer: 3 / 4
True
Q:l Whatl isl containedl inl thel paranasall sinuses?
Answer:
Frontal,l sphenoidal,l ethmoid,l andl maxillary
Q:l Whatl doesl thel paranasall sinusesl helpl with?
Answer:
Lightenl thel skulll -l warml andl moistenl airl -l whenl passagesl connectingl sinusesl andl nasall cavityl arel blockedl withl mucus,l thel airl isl absorbedl byl thel mucosa,l causingl al partiall vacuuml (sinusl headache)
Q:l Whatl isl thel pharynx?
Answer:
Connectsl nasall cavityl andl mouthl tol larynxl andl esophagusl -l 13l cml longl -l 3l parts:l nasopharynx,l Oropharynx,l andl laryngopharynx
Q:l Whatl isl thel nasopharynxl inl thel parynx?
Answer:
Onlyl airl passage,l softl palatel andl uvulal blockl whilel swallowing
Q:l Whatl isl thel oropharynxl inl thel parhynx?
Answer:
Bothl foodl andl airl pass
Q:l Whatl isl thel laryngopharynxl inl thel pharynx?
Answer:
Justl belowl epiglottis
Q:l Whatl isl thel larynx?
Answer:
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