PNB 2265 Respiration Exam Questions
and Correct Answers 2024 Latest Update
(Already Passed)
A thickened fused respiratory membrane causes what condition?
a. asthma
b. anaphylaxis
c. cystic fibrosis - Answer- cystic fibrosis
Surfactant regulates ________
a. fluid retention
b. surface tension
c. ventilation
d. dilation and constriction - Answer- surface tension (of alveoli)
ventilation - Answer- the process of bringing air into and out of the lungs; based off of
pressure gradients
The pressure gradient required for ventilation is between the lungs and the air outside of
the body. Because of this, humans are _________________________________
a. positive pressure breathers
b. negative pressure breathers - Answer- negative pressure breathers
Normal tidal inspiration involves the contraction of the diaphragm and the external
intercostal muscles, increasing the volume. This __________________ the pressure
inside of the thoracic cavity.
a. increases
b. decreases - Answer- decreases
True or False: tidal expiration does not require muscle contraction - Answer- true
chronic obstructive pulmonary disease (COPD) - Answer- umbrella term used to
describe pulmonary diseases such as emphysema or chronic bronchitis; leads to
difficulty breathing and progressively worsens over time
Intrapleural pressure should always be _________________
a. negative/subatmospheric
b. postive/ above atmospheric - Answer- negative/subatmospheric
, bronchodilation - Answer- increases the radius and decreases the resistance to
increase airflow into the alveoli
bronchoconstriction - Answer- decreases the radius and increases the resistance to
decrease airflow into the alveoli
Bronchioles have _______________________ receptors that are _____-coupled
a. beta-adrenergic; Gs
b. muscarinic; Gi
c. both
d. neither - Answer- both
vital capacity - Answer- the sum of the inspiratory reserve volume, tidal volume, and
expiratory reserve volume; the total volume of air that can be moved into and out of the
lungs
residual volume - Answer- the one liter of lung volume that humans do not have access
to
The __________________ zone makes up the anatomical dead space
a. conducting
b. respiratory - Answer- conducting
To assess alveolar ventilation, _______ must be measured in one's exhaled breath.
a. O2
b. CO2
c. N2
d. H2O - Answer- CO2
Henry's Law - Answer- the concentration of any gas in a solution is determined by the
solubility of that gas and its partial pressure
The upper respiratory system contains the:
a. pharynx and trachea
b. bronchi, bronchioles, alveoli; the lungs - Answer- pharynx and trachea
The three regions of the pharynx - Answer- nasopharynx, oropharynx, laryngopharynx
The nasopharynx and the oropharynx meet with the ________________ further down
the throat - Answer- laryngopharynx
The ______________ carries air into the trachea
a. nasopharynx
b. oropharynx
c. laryngopharynx - Answer- oropharynx
and Correct Answers 2024 Latest Update
(Already Passed)
A thickened fused respiratory membrane causes what condition?
a. asthma
b. anaphylaxis
c. cystic fibrosis - Answer- cystic fibrosis
Surfactant regulates ________
a. fluid retention
b. surface tension
c. ventilation
d. dilation and constriction - Answer- surface tension (of alveoli)
ventilation - Answer- the process of bringing air into and out of the lungs; based off of
pressure gradients
The pressure gradient required for ventilation is between the lungs and the air outside of
the body. Because of this, humans are _________________________________
a. positive pressure breathers
b. negative pressure breathers - Answer- negative pressure breathers
Normal tidal inspiration involves the contraction of the diaphragm and the external
intercostal muscles, increasing the volume. This __________________ the pressure
inside of the thoracic cavity.
a. increases
b. decreases - Answer- decreases
True or False: tidal expiration does not require muscle contraction - Answer- true
chronic obstructive pulmonary disease (COPD) - Answer- umbrella term used to
describe pulmonary diseases such as emphysema or chronic bronchitis; leads to
difficulty breathing and progressively worsens over time
Intrapleural pressure should always be _________________
a. negative/subatmospheric
b. postive/ above atmospheric - Answer- negative/subatmospheric
, bronchodilation - Answer- increases the radius and decreases the resistance to
increase airflow into the alveoli
bronchoconstriction - Answer- decreases the radius and increases the resistance to
decrease airflow into the alveoli
Bronchioles have _______________________ receptors that are _____-coupled
a. beta-adrenergic; Gs
b. muscarinic; Gi
c. both
d. neither - Answer- both
vital capacity - Answer- the sum of the inspiratory reserve volume, tidal volume, and
expiratory reserve volume; the total volume of air that can be moved into and out of the
lungs
residual volume - Answer- the one liter of lung volume that humans do not have access
to
The __________________ zone makes up the anatomical dead space
a. conducting
b. respiratory - Answer- conducting
To assess alveolar ventilation, _______ must be measured in one's exhaled breath.
a. O2
b. CO2
c. N2
d. H2O - Answer- CO2
Henry's Law - Answer- the concentration of any gas in a solution is determined by the
solubility of that gas and its partial pressure
The upper respiratory system contains the:
a. pharynx and trachea
b. bronchi, bronchioles, alveoli; the lungs - Answer- pharynx and trachea
The three regions of the pharynx - Answer- nasopharynx, oropharynx, laryngopharynx
The nasopharynx and the oropharynx meet with the ________________ further down
the throat - Answer- laryngopharynx
The ______________ carries air into the trachea
a. nasopharynx
b. oropharynx
c. laryngopharynx - Answer- oropharynx
