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EXAM 3 BIOS 1310 WITH
QUESTIONS AND ANSWERS
LATEST UPDATE 2026
What are Nasal Conchae-ANSWER-directs air into 6
passageways/meatuses (splits airstream to make it swirl)
Functions: Warming, Better sense of smell, Traps particles
What are the three parts of Pharynx (Throat Anatomy photo)-
ANSWER-Nasopharynx
Oropharynx
laryngopharynx
What is Uvula-ANSWER-Produces thin mucus that lubricates
pharnyx
Larynx contains what two main structures, what do they do?-
ANSWER-vocal cords; when they vibrate they produce sound
Epiglottis; closes during swallowing (blocks food from going in
airway)
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Tracheal has what cartilage? gland? epithelium?-ANSWER-C-
shaped cartilages: hold open Trachea
Mucous glands, and pseudostratified ciliated columnar
epithelium
Difference between Lungs-ANSWER-Right Lung: 3 lobes (sup,
mid, inf lobe)
Left Lung: 2 lobes (Apex and Base; cardiac notch)
What is the hilum-ANSWER-Site of entrance and exit in lungs
for blood vessels and bronchi
Bronchial Tree and the breakdown of your airway?-ANSWER-
branching system of air tubes
Trachea → Main bronchi (each lung) → Lobar Bronchi (each
lobe) → Segmental bronchi (more branches) → Bronchioles →
terminal bronchioles (smallest conducting) → respiratory
bronchiole → alveolar duct (cluster of air sac) → alveoli (indiv.
air sac)
Alveoli do what?-ANSWER-Site of exchange with many
capillaries surrounding
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Conducting Zone, ____-______, function?-ANSWER-Trachea
to terminal bronchioles
Conducts the air and has no gas exchange
Respiratory Zone, ______-________, function?-ANSWER-
Respiratory bronchioles to alveoli
Site of exchange
Where can you find Elastic Connective Tissue in respiratory
system? made of? what does it do?-ANSWER-Found in lungs
and bronchi + bronchioles
Contains elastin fibers
Stretches with inhalation and during elastic recoil (unstretched)
it expels air
Where can you find overlapping plates/cartliage, made of what
cartliage?-ANSWER-NOT on main bronchi and bronchioles
Found on all other bronchi
contains hyaline cartliage
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Smooth muscle found on Bronchioles does what?-ANSWER-
Controls diameter of airways and protects lung and body from
inhaled irritants or toxins
What is a Bronchospasm-ANSWER-When smooth muscle of
bronchioles spasms/constricts, causes excess mucus
Caused by asthma, allergies, chemical fumes
Alveoli cells contains what epithelium and cells-ANSWER-
Simple Squamous Epithelium
Squamous Alvelolar Cells—flat for gas exchange
“Type I pneumocytes”
Great Alveolar Cells—produces surfactant + not flat
“Type II pneumocytes”
What does surfactant do?-ANSWER-Substance that reduces
surface tension of liquid that that it is dissolved in
Prevents collapse of alveoli in lungs
EXAM 3 BIOS 1310 WITH
QUESTIONS AND ANSWERS
LATEST UPDATE 2026
What are Nasal Conchae-ANSWER-directs air into 6
passageways/meatuses (splits airstream to make it swirl)
Functions: Warming, Better sense of smell, Traps particles
What are the three parts of Pharynx (Throat Anatomy photo)-
ANSWER-Nasopharynx
Oropharynx
laryngopharynx
What is Uvula-ANSWER-Produces thin mucus that lubricates
pharnyx
Larynx contains what two main structures, what do they do?-
ANSWER-vocal cords; when they vibrate they produce sound
Epiglottis; closes during swallowing (blocks food from going in
airway)
, Page | 2
Tracheal has what cartilage? gland? epithelium?-ANSWER-C-
shaped cartilages: hold open Trachea
Mucous glands, and pseudostratified ciliated columnar
epithelium
Difference between Lungs-ANSWER-Right Lung: 3 lobes (sup,
mid, inf lobe)
Left Lung: 2 lobes (Apex and Base; cardiac notch)
What is the hilum-ANSWER-Site of entrance and exit in lungs
for blood vessels and bronchi
Bronchial Tree and the breakdown of your airway?-ANSWER-
branching system of air tubes
Trachea → Main bronchi (each lung) → Lobar Bronchi (each
lobe) → Segmental bronchi (more branches) → Bronchioles →
terminal bronchioles (smallest conducting) → respiratory
bronchiole → alveolar duct (cluster of air sac) → alveoli (indiv.
air sac)
Alveoli do what?-ANSWER-Site of exchange with many
capillaries surrounding
, Page | 3
Conducting Zone, ____-______, function?-ANSWER-Trachea
to terminal bronchioles
Conducts the air and has no gas exchange
Respiratory Zone, ______-________, function?-ANSWER-
Respiratory bronchioles to alveoli
Site of exchange
Where can you find Elastic Connective Tissue in respiratory
system? made of? what does it do?-ANSWER-Found in lungs
and bronchi + bronchioles
Contains elastin fibers
Stretches with inhalation and during elastic recoil (unstretched)
it expels air
Where can you find overlapping plates/cartliage, made of what
cartliage?-ANSWER-NOT on main bronchi and bronchioles
Found on all other bronchi
contains hyaline cartliage
, Page | 4
Smooth muscle found on Bronchioles does what?-ANSWER-
Controls diameter of airways and protects lung and body from
inhaled irritants or toxins
What is a Bronchospasm-ANSWER-When smooth muscle of
bronchioles spasms/constricts, causes excess mucus
Caused by asthma, allergies, chemical fumes
Alveoli cells contains what epithelium and cells-ANSWER-
Simple Squamous Epithelium
Squamous Alvelolar Cells—flat for gas exchange
“Type I pneumocytes”
Great Alveolar Cells—produces surfactant + not flat
“Type II pneumocytes”
What does surfactant do?-ANSWER-Substance that reduces
surface tension of liquid that that it is dissolved in
Prevents collapse of alveoli in lungs
