Section 5 Exam Flashcards
(99 cards)
True or False? A decrease in pulmonary vascular resistance will decrease blood flow through lungs
F.
True or False? A decrease in the arterial to venous pressure gradient will decrease blood flow through the lungs.
T
True or False? An increase in the blood pressure within the pulmonary after will decrease blood flow through the lungs
F.
True or False? In emphysema, RV is increased because of a decrease in lung compliance.
F.
True or False? In emphysema, RV increases due to flow limitation that causes air trapping.
T.
True or False? In emphysema, FRC increases because of an increase in lung recoil pressure.
F.
True or False? The ability of a person to cough will be decreased if their spinal cord is cut at C7.
T
True or False? Inspiration will be completely normal for a person whose spinal cord has been cut at C7.
F.
True or False? In a person with pulmonary fibrosis expired ventilation must increase in order to maintian normal alveolar ventilation.
T.
True or False? In a person with pulmonary fibrosis diffusion of oxygen across the alveolar/ capillary membrane decreases.
T
True or False? In a person with pulmonary fibrosis, FRC decreases because lung recoil pressure decreases.
F
True or False? In a person with pulmonary embolism alveolar dead space increases.
T
True or False? in a person with pulmonary embolism the flow/perfusion ratio decreases.
F
True or False? in a person with pulmonary embolism the paO2 increases.
F.
The PA(O2) is less than the PI(O2) because:
water vapor pressure increases during inspiration, oxygen is constantly diffusing into the pulmonary capillaries, the PA(CO2) is greater than the PI(CO2)
Pa(O2) will be less than normal if:
the DL(CO) decreases, alveolar dead space increases, or shunt increases
True or False? The solubility layer is maintained by the movement of ions and fluids across the apical membrane of ciliated epithelial cells.
T
True or False? Airways smooth muscle contract when acetylcholine is released from parasympathetic neurons.
T
True or False? Only sympathetic neurons contract when acetylcholine is released from parasympathetic neurons.
F
True or False? Gas exchange does not occur in the conducting airways.
T
True or False? Prolonged cigarette smoking decreases movement of cilia and causes an increase in the number of goblet cells.
T
The overall flow/ perfusion ratio of the lungs can be altered by:
changes in alveolar dead space, changes in the amount of extrapulmonary shunt, and moving from standing to the lying down position.
True or False? At rest, most of the diffusion occurs within the first one third of the pulmonary capillary.
T.
True or False? During exercise, DL (O2) increases due to recruitment of pulmonary capillaries.
T