Test Bank: Structure And Function Of The Pulmonary System Already Passed

What is the partial pressure of oxygen in the lung given the following conditions? Percentage of oxygen in air: 20 Barometric pressure: 700 mm Hg {Ans: 140 mm Hg -the partial pressure of oxygen is equal to the percentage of oxygen in the air times the total pressure (700 x .20 = 140)}________ seconds is required for oxygen concentration it equilibrate across the alveolocapillary membrane. {Ans: .25}A pulmonologist is discussing the base of the lungs with staff. Which information should be included? At the base of the lungs: {Ans: arterial perfusion pressure exceeds alveolar gas pressure -in the base of the lungs, both arterial and venous pressures are greater than alveolar pressure, and blood flow is not affected by alveolar pressure}Which of the following terms should the nurse use when there is a balance between outward recoil of the chest wall and inward recoil of lungs at rest? {Ans: functional residual capacity (FRC) is reached -balance between the outward recoil of the chest wall and inward recoil of the lungs occurs at the resting level, the end of expiration, where FRC is reached}While planning care for a patient with respiratory difficulty and retaining too much carbon