Kahoots post-quiz 2 Flashcards
True or false: normally alveoli empty completely during expiration
False
True or false: alveolar ventilation doesn’t always increase when pulmonary ventilation increases
True
True or false: O2 and CO2 have equal diffusion constants
False; sometimes they’re at different rates
True or false: Hemoglobin has a higher affinity for O2 than any other substance
False (carbon monoxide)
True or false: rhythmicity of breathing is brought about by pacemaker activity displayed by the respiratory muscles
False
What type of pulmonary cells are responsible for secreting surfectant?
Type II alveolar cells
If there’s an obstruction, air flow can still occur because of what?
Pores of Kohn (between alveoli)
What nerve innervates the diaphragm?
Phrenic
The changes in lung volume that occur with different respiratory efforts can be determined by a what?
Spirometer
Pulmonary resistance is _________ that of vascular resistance
1/10
What’s the most common cause of pulmonary embolism?
DVT
True or false: the pulmonary system contains less smooth muscle than systemic circulation
True
What is the major cause of death with COPD patients?
Right sided heart failure
Ventilation is higher at the _____________ of the lungs
apex
What is the main control of the respiratory center?
Medulla
