, which pressure gradient is responsible for the actual flow of gas into and out of the lungs during
breathing? correct answers transairway pressure
during normal tidal ventilation, the trans pulmonary pressure gradient reaches its max value at what
point in the cycle? correct answers end inspiration
term used to note difference between insporatory and expiratory volumes at a given pressure correct
answers hysteresis
How is compliance calculated? correct answers change in volume/change in pressure
How is airway resistance calculated? correct answers change in pressure divided by flow
which formula is used to compute WOB? correct answers change in pressure/change in volume
approximate normal level of CO2 production for an adult? correct answers 200 ml/min
what is the primary determinant of PAO2? correct answers PO2 in inspired gas
CO2 diffuses across the A-C membrane how many times faster than O2 correct answers CO2 diffuses 20
times faster then O2
20:1
what is the minimum amount of time that blood must take for pulmonary capillary transit for
equilibrium of oxygen to occur across the AC membrane? correct answers 0.25 second
How is the vast majority of oxygen carried in the blood? correct answers combined with Hb
Under normal physiologic circumstances, how many milliliters of oxygen are capable of combining with
1 g of Hb? correct answers 1.34 ml
the oxidation of Hb molecules iron ions to the ferric state results in the formation of which type of Hb?
correct answers metHb
the affinity of Hb for CO is approximately how many times greater than its affinity for oxygen correct
answers 200x
the largest percentage of CO2 is transported in the as correct answers HCO3-
a solution that resists large changes in pH upon addition of an acid or a base is known as a correct
answers buffer solution