BIO 669 Quiz 5 ACTUAL Questions and CORRECT Answers
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Course
BIO 669
Institution
BIO 669
BIO 669 Quiz 5 ACTUAL Questions and
CORRECT Answers
What is the conducting airways? - CORRECT ANSWER- The mechanical act of having
airflow into and out of the alveoli and respiratory bronchioles.
Do not participate in gas exchange
Components: the nasopharynx, oropharynx, larynx, trachea, br...
BIO 669 Quiz 5 ACTUAL Questions and
CORRECT Answers
What is the conducting airways? - CORRECT ANSWER✔✔- The mechanical act of having
airflow into and out of the alveoli and respiratory bronchioles.
Do not participate in gas exchange
Components: the nasopharynx, oropharynx, larynx, trachea, bronchi, and nonrespiratory
bronchioles.
What is respiratory airways? - CORRECT ANSWER✔✔- Actual exchange of oxygen and
carbon dioxide across the membrane
Components: Respiratory bronchioles, alveolar ducts and alveoli
what are type 1 alveolar cells? - CORRECT ANSWER✔✔- structural- help allow for
exchange across the membrane
what are type 2 alveolar cells? - CORRECT ANSWER✔✔- surfactant producers
What does surfactant do? - CORRECT ANSWER✔✔- protein that reduces surface tension
inside the alveolar or respiratory membrane.
helps to interfere with the hydrogen bond (what makes things tighter) and loosen it so that the
alveoli can inflate
what happens to the pulmonary artery during acidemia? - CORRECT ANSWER✔✔- The
pulmonary artery constricts.
How many of the pulmonary veins are filled with blood? - CORRECT ANSWER✔✔- 1/3
,why does the pulmonary artery constrict during acidemia? - CORRECT ANSWER✔✔-
constricts to reduce blood flow to an area that has CO2 build-up
What is the alveolocapillary membrane? - CORRECT ANSWER✔✔- It is formed by shared
alveolar and capillary walls, structures include the thin membrane of alveolar epithelium,
alveolar basement membrane, interstitial space, capillary basement membrane, and capillary
endothelium.
the wall that oxygen and CO2 have to cross for respiration to occur
what does the caliber of the pulmonary artery mean? - CORRECT ANSWER✔✔- the radius
what happens to the pressure in the thoracic cavity as your chest expands? - CORRECT
ANSWER✔✔- the pressure of the thoracic cavity drops causing inspiration (Air going in)
what direction does air go in regard to pressure? - CORRECT ANSWER✔✔- from high
pressure to low pressure, like fluid
what is the visceral layer connected to? - CORRECT ANSWER✔✔- it is connected to the
lungs
what is the parietal layer connected to? - CORRECT ANSWER✔✔- it is connected to the
chest wall
What does pleural fluid do? - CORRECT ANSWER✔✔- it connects the parietal and the
visceral layer and helps to reduce friction
what is the function of the pulmonary system? - CORRECT ANSWER✔✔- ventilate the
alveoli, diffuse gases into and out of the blood (respiration), perfuse the lungs with blood so
the body receives oxygen
What does a spirometer do? - CORRECT ANSWER✔✔- measures volume of air that we are
able to control
, What is vital capacity? - CORRECT ANSWER✔✔- the greatest volume of air that can be
expelled from the lungs after taking the deepest possible breath.
What is tidal volume? - CORRECT ANSWER✔✔- the amount of air you move in and out
during quiet breathing
What is inspiratory reserve volume? - CORRECT ANSWER✔✔- additional inspired air over
and above tidal volume
What is expiratory reserve volume? - CORRECT ANSWER✔✔- volume of air in excess of
tidal volume that can be exhaled forcibly
What is residual volume? - CORRECT ANSWER✔✔- Air in lungs after maximal expiration
that we are not able to fully eliminate.
Cannot be measured on spirometry
what is functional residual capacity? - CORRECT ANSWER✔✔- Combined residual and
expiratory reserve volumes (ERV + RV)
the equilibrium point of lungs wanting to collapse and chest wall wanting to expand.
what happens with a disease state like COPD and emphysema, when addition air is trapped in
the lungs? - CORRECT ANSWER✔✔- the residual volume increases, causing the other
volumes to increase, reducing inspiratory reserve volume
resets where lung and chest wall come to the equilibrium of not having to overwork to
expand or contract
What is ventilation? - CORRECT ANSWER✔✔- movement of air in and out of the lungs
What is minute volume? - CORRECT ANSWER✔✔- The amount of air that moves in and
out of the respiratory tract per minute.
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