RT Ch. 3 Mechanics Practice Quiz-D

51. Emphysema patients have

Increased FRC

51. Emphysema patients have

Low lung recoil from loss of elastic lung tissue.

57. Surfactant increases the surface tension, allowing easier inflation of small alveoli.

False

45. The Pressure-Volume (PV) curve measures

Reduction in compliance

51. Pulmonary fibrosis patients have

Decreased FRC

56. The fluid-filled lung has ___ to expand than the normal air-filled lung

lower pressure required

45. The upper and lower inflection points of the Pressure-Volume (PV) curve are

markers of severity of situation

47. Hysteresis is the difference between the

Transpulmonary pressure of inhalation and exhalation

48. In a PV curve, at UIP

alveoli are overdistended, compliance falls

46. The segment between the LIP and the UIP reflects

zone of optimal compliance

48. In a PV curve, the Expiratory limb

all alveoli are already open

48. In a PV curve, at LIP

many alveoli open, compliance increases

52. In a quiet, passive exhalation, the longest exhalation time is someone with

high lung compliance

48. In a PV curve, the segment from RV to LIP

many alveoli collapsed

57. Laplace's law: larger radius requires higher distending pressure

False

51. Pulmonary fibrosis patients have

Decreased lung volume from scarred lungs.

56. The fluid-filled lung has _______ compliance than the normal air-filled lung

higher

51. Asthma patients have

Increased pressure in alveoli from air trapped by mucus.

46. A machine's tidal ventilation should be set for this pressure and volume range

between the LIP and the UIP

55. Which of the following is NOT true about surface tension force?

it's responsible for a small % of the lung's recoil force.

51. Asthma patients have

Increased FRC