NURS 226: Chapter 17 Question and
answers correctly solved 2025/2026
What is the first segment of the respiratory system? - correct answer ✔nose
Describe the functions of the nose - correct answer ✔warms, moistens, and filters inhaled air, and is
sensory organ for smell
What is the columella of the nose? - correct answer ✔divides the two nares and continuous inside with
nasal septum (bone part)
What is the ala of the nose? - correct answer ✔lateral outside wing of nose on either side
What is the nose comprised of? - correct answer ✔The upper third is made up of bone and the rest is
cartilage
What makes up the external nose? - correct answer ✔the bridge and tip
What are nasal hairs and where do they line? - correct answer ✔-filter coarsest matter from inhaled air
-line anterior edge of cavity
What is the mucous blanket and what does it line? - correct answer ✔-filters out fine matter;
humidifies
-most of the nasal cavity
Why is nasal mucosa redder than oral mucosa? - correct answer ✔because of the rich blood supply
present to warm the inhaled air
, Where is a common place for nosebleeds? - correct answer ✔Kiesselbach's plexus
The lateral walls of each nasal cavity contain three parallel bony projections, what are they? - correct
answer ✔superior, middle, and inferior turbinates
Where is Kiesselbach's Plexus located? - correct answer ✔anterior portion of the nasal septum; this
area has a rich vascular network
How do you name the turbinates of the nasal septum? - correct answer ✔named for the space above it
What are the purpose of the turbinates? - correct answer ✔To warm, moisten, and filter incoming air,
receiving olfactory stimuli, and modify speech sounds
What cranial nerve is in charge of smell? - correct answer ✔Olfactory (CN I)
Our heads would be VERY heavy if we didn't have what? - correct answer ✔sinuses
What are paranasal sinuses? - correct answer ✔-hollow portions of bones surrounding the nasal cavity
-serve as resonators for sound production, and provide mucus, which drains into nasal cavity
How can sinuses cause inflammation or sinusitis? - correct answer ✔The openings are narrow and
easily occluded
What are the two sinuses that are accessible to examine? - correct answer ✔-Frontal sinuses in frontal
bone above and medial to orbits (by the eyebrows)
-Maxillary sinuses in maxilla (cheekbone) along side walls of nasal cavity
answers correctly solved 2025/2026
What is the first segment of the respiratory system? - correct answer ✔nose
Describe the functions of the nose - correct answer ✔warms, moistens, and filters inhaled air, and is
sensory organ for smell
What is the columella of the nose? - correct answer ✔divides the two nares and continuous inside with
nasal septum (bone part)
What is the ala of the nose? - correct answer ✔lateral outside wing of nose on either side
What is the nose comprised of? - correct answer ✔The upper third is made up of bone and the rest is
cartilage
What makes up the external nose? - correct answer ✔the bridge and tip
What are nasal hairs and where do they line? - correct answer ✔-filter coarsest matter from inhaled air
-line anterior edge of cavity
What is the mucous blanket and what does it line? - correct answer ✔-filters out fine matter;
humidifies
-most of the nasal cavity
Why is nasal mucosa redder than oral mucosa? - correct answer ✔because of the rich blood supply
present to warm the inhaled air
, Where is a common place for nosebleeds? - correct answer ✔Kiesselbach's plexus
The lateral walls of each nasal cavity contain three parallel bony projections, what are they? - correct
answer ✔superior, middle, and inferior turbinates
Where is Kiesselbach's Plexus located? - correct answer ✔anterior portion of the nasal septum; this
area has a rich vascular network
How do you name the turbinates of the nasal septum? - correct answer ✔named for the space above it
What are the purpose of the turbinates? - correct answer ✔To warm, moisten, and filter incoming air,
receiving olfactory stimuli, and modify speech sounds
What cranial nerve is in charge of smell? - correct answer ✔Olfactory (CN I)
Our heads would be VERY heavy if we didn't have what? - correct answer ✔sinuses
What are paranasal sinuses? - correct answer ✔-hollow portions of bones surrounding the nasal cavity
-serve as resonators for sound production, and provide mucus, which drains into nasal cavity
How can sinuses cause inflammation or sinusitis? - correct answer ✔The openings are narrow and
easily occluded
What are the two sinuses that are accessible to examine? - correct answer ✔-Frontal sinuses in frontal
bone above and medial to orbits (by the eyebrows)
-Maxillary sinuses in maxilla (cheekbone) along side walls of nasal cavity
