Patho PKAT- Respiratory:
Question 1 10 / 10 points
What is the function of the mucociliary escalator in the trachea and bronchi?
a) To facilitate gas exchange at the alveolar capillary level.
b) To wave respiratory secretions upwards and away from the lungs.
c) To help hemoglobin better bind with oxygen.
d) To enhance the overall tidal volume of the lungs.
Question 2 10 / 10 points
What is the purpose of surfactant in the lungs?
a) Keeps the alveoli open during expiration to decrease the work of breathing.
b) Allows the bronchioles to remain open to decrease bronchospasm.
c) Prevents blood from clotting and causing a pulmonary embolus.
d) Facilitates upward movement of secretions to clear the airway.
Question 3 10 / 10 points
Match the following to describe the functions of the lungs.
1 → Movement of gases in and out of the lungs (ventilation)
2 → Exchange of gases at the alveolar capillary level (oxygenation)
Question 4 10 / 10 points
What is the normal respiratory rate and the normal oxygen saturation?
a) RR 12-20/min, SpO2 > 95%
b) RR 6-12/min, SpO2> 85%
c) RR 20 - 30/min, SpO2 > 88%
d) RR 6-12, SpO2 > 90%
Question 5 10 / 10 points
If pressure in the pleural space becomes positive, the lung will collapse.
True
False
Question 6 10 / 10 points
What 3 factors are needed for adequate oxygen transport to the tissues?
a) high colloid osmotic pressure, low hydrostatic pressure, high O2/CO2 gradient
b) adequate hemoglobin, high carbon dioxide, high O2/CO2 gradient
c) adequate hemoglobin, cardiac output, oxygen saturation
d) high paCO2, chemoreceptors, phrenic nerve transmission
