Respiratory System — Flashcards

The V/Q ratio at the apex of the lung is normally _____, indicating wasted ventilation

The two sources of the physiologic shunt are _____ blood flow and a small portion of coronary venous blood (drains into the left ventricle via the thebesian vein)

_____ in Pco2 cause the O2-hemoglobin dissociation curve to shift to the right

_____ O2 binding to hemoglobin causes decreased affinity for CO2 (Haldane effect)

Breathing as an involuntary process is controlled by the _____ and pons of the brain stem

The _____ center is located in the upper pons and inhibits inspiration

In zone _____ of the lung, alveolar ventilation (V) is lowest

Central sleep apnea may be also caused by delayed detection / response to changes in _____ resulting in cyclic (cheyne-stokes) breathing

_____ in temperature cause the O2-hemoglobin dissociation curve to shift to the right

The lung diffusing capacity, DL, _____ in pulmonary fibrosis due to increased wall thickness (x)